Research:Gemcutting

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Gem Value

Most of the table entries have been determined by buying one or more gems belonging to the relevant material group, while some have been calculated.

Size\Quality Low Average High Very High Material
Small A$0.75 A$1.25 A$1.75 A$2.25 Quartz
Large A$1.00 A$1.75 A$2.50 A$3.25
Huge A$1.50 A$2.75 A$4.00 A$5.25
Small A$1.00 A$1.75 A$2.50 A$3.25 Amber, Jet, Obsidian
Large A$1.38 A$2.50 A$3.63 A$4.75
Huge A$2.13 A$4.00 A$5.88 A$7.75
Small A$1.25 A$2.25 A$3.25 A$4.25 Ankhstone, Smoky Quartz, Moonstone, Rose Quartz
Large A$1.75 A$3.25 A$4.75 A$6.25
Huge A$2.75 A$5.25 A$7.75 A$10.25
Small A$1.75 A$3.25 A$4.75 A$6.25 Agate, Jasper, Zircon, Chrysoprase, Onyx, Citrine, Tiger's Eye
Large A$2.50 A$4.75 A$7.00 A$9.25
Huge A$4.00 A$7.75 A$11.50 A$15.25
Small A$2.25 A$4.25 A$6.25 A$8.25 Amethyst, Lapis Lazuli, Tourmaline, Cornelian, Malachite, Turquoise, Jade, Olivine
Large A$3.25 A$6.25 A$9.25 A$12.25
Huge A$5.25 A$10.25 A$15.25 A$20.25
Small A$2.75 A$5.25 A$7.75 A$10.25 Aquamarine, Opal, Rose Beryl
Large A$4.00 A$7.75 A$11.50 A$15.25
Huge A$6.50 A$12.75 A$19.00 A$25.25
Small A$3.00 A$5.75 A$8.50 A$11.25 Alexandrite, Heliodor, Topaz, Emerald, Ruby, Garnet, Sapphire
Large A$4.38 A$8.50 A$12.63 A$16.75
Huge A$7.13 A$14.00 A$20.88 A$27.75
Small A$3.25 A$6.25 A$9.25 A$12.25 Corundum, Diamond, Octarine
Large A$4.75 A$9.25 A$13.75 A$18.25
Huge A$7.75 A$15.25 A$22.75 A$30.25

Cut Results

Cut results seem to be largely grouped into flawed and non-flawed/successful results.

Short Description

Short descriptions as seen with "glance" or when the gem is set into a piece of jewellery.

Successful cuts:

A <size> <cut> <gem>.

Flawed cuts:

A <size> flawed <cut> cut <gem>.

A <size> pitted <cut> cut <gem>.

A <size> clouded <cut> cut <gem>.

Where <size> is the size of the cut gem (tiny, small, medium, large, huge), <cut> is the gem cut, <gem> is the gem material optionally prefixed with an alternative colour (see gem material table).

Long Description

The long description, as seen with "look", consists of two parts: the first sentence depends on the cut, the second sentence on the transparency of the gem material. The gem transparency is not visible with either glance, look or appraise and has been initially determined from non-MUD sources and then completed by assuming gems with the same descriptions are in the same transparency group:

Cut Flawed Good
Cabochon
High Cabochon
Lentil-Shaped Cabochon
Baguette This <size> <gem> has been cut into a crooked rectangular shape. This <size> <gem> has been cut into a narrow rectangular shape.
Tapered Baguette This <size> <gem> has been cut into a rough trapezoid shape with uneven ends. This <size> <gem> has been cut into a narrow trapezoid shape with one end narrower than the other.
Octagonal Step Cut This <size> <gem> is cut in a long roughly octagonal shape with the four corners metered. Several flaws run through its twenty-five facets. This <size> <gem> is cut in an elongated octagonal shape with the four corners metered.
Trillion This <size> <gem> has been cut in an uneven triangular shape This <size> <gem> has been cut into an even triangular shape.
Pear-shaped This <size> <gem> has a pear shape with a fractured end. This <size> <gem> has been cut into a pear shape that comes to a pointed end.
Cushion This <size> <gem> has been cut into a somewhat square shape with rounded corners. This <size> <gem> has been cut into an almost quadratic shape with rounded corners and resembles a pillow.
Rose This <size> <gem> has been cut to a roughly round shape when viewed from the top. This <size> <gem> has been cut to a round shape when viewed from the top.
Marquise This <size> <gem> has been cut into a slightly distorted boat shape with pointed ends. This <size> <gem> has been cut into a symmetrical boat shape with pointed ends.
Brilliant This <size> <gem> is imperfectly round when viewed from the top and is a crooked pyramid when viewed side on. This <size> <gem> when viewed from the top has a flat round shape and side on it is pyramidal.
Heart-shaped This <size> <gem> has been roughly cut into a pear shape with a cleft at the top, making it look like an uneven love heart. This <size> <gem> has been cut into a pear shape with a cleft at the top, making it look like a love heart.
Oval-shaped This <size> <gem> has been cut into a modified brilliant shape with an uneven oval-shaped girdle outline. This <size> <gem> has been cut into a modified brilliant shape with an oval-shaped girdle outline.
Teardrop This <size> <gem> has been cut into an asymmetrical shape with one pointed end and one wobbly rounded end. This <size> <gem> has been cut into an asymmetrical shape with one pointed end and one rounded end.
Princess This <size> <gem> has been cut into an imperfect square modified brilliant shape. This <size> <gem> has been cut into a square modified brilliant shape.

The transparency parts

The different descriptions may or may not be related to the quality of the cut. Opaque gems have two, translucent gems three, and transparent gems four different messages. The messages seem to be used independently from the value of the gem.

Transparent Translucent Opaque
It has <number> shiny facets. Light sparkles off its <number> facets. It has <number> facets which reflect the light.
It has <number> sparkling facets. The gem's translucent properties have been enhanced by its <number> facets. Light is reflected off its <number> facets.
Its <number> facets sparkle attractively in the light. The colours of the rainbow reflect off the gem's <number> facets. -
Light glints off the gem's <number> perfect facets. - -

Where:

Material Transparency
Agate Opaque
Alexandrite Transparent
Amber Transparent
Amethyst Transparent
Ankhstone Opaque
Aquamarine Transparent
Chrysoprase Translucent
Citrine Transparent
Cornelian Opaque
Corundum Translucent
Diamond Transparent
Emerald Transparent
Garnet Transparent
Heliodor Transparent
Jade Translucent
Jasper Opaque
Jet Opaque
Lapis Lazuli Opaque
Malachite Opaque
Moonstone Opaque
Obsidian Opaque
Octarine Transparent
Olivine Transparent
Onyx Opaque
Opal Translucent
Quartz Transparent
Rose Beryl Transparent
Rose Quartz Translucent
Ruby Transparent
Sapphire Transparent
Smoky Quartz Transparent
Tiger's Eye Translucent
Topaz Transparent
Tourmaline Transparent
Turquoise Opaque
Zircon Transparent

Cut Value

The value of a cut gem is a function of the gem material, gem size, gem quality, cut difficulty, and cut quality. The cuts seem to be divided into four difficulty groups (value group) and four cut qualities: flawed, good, better, best. The good, better, and best cut qualities cannot be distinguished from the gem description, but only manifest via different values of the cut gems.

Cut Facets Difficulty Value Group
Cabochon - Easy 0
High Cabochon - Easy 0
Lentil-shaped Cabochon - Easy 0
Baguette 20 Intermediate 1
Tapered Baguette 20 Intermediate 1
Octagonal Step Cut 25 Intermediate 1
Trillion 44 Advanced 1
Pear-shaped 54 Advanced 1
Cushion 54 Advanced 1
Rose 57 More Advanced 2
Marquise 57 More Advanced 2
Brilliant 57 Expert 2
Heart-shaped 59 Expert 3
Oval-shaped 69 Expert 3
Teardrop 71 Expert 3
Princess 76 Expert 3

Or in numbers:

Table of cut gem values for value group 0
Material Size Low Average High Very High
Flawed Good Better Best Flawed Good Better Best Flawed Good Better Best Flawed Good Better Best
Quartz Tiny A$1.05 A$2.33 A$2.49 A$2.81 A$1.85 A$4.41 A$4.73 A$5.37 A$2.65 A$6.49 A$6.97 A$7.93 A$3.45 A$8.57 A$9.21 A$10.49
Small A$1.45 A$3.37 A$3.61 A$4.09 A$2.65 A$6.49 A$6.97 A$7.93 A$3.85 A$9.61 A$10.33 A$11.77 A$5.05 A$12.73 A$13.69 A$15.61
Medium A$1.85 A$4.41 A$4.73 A$5.37 A$3.45 A$8.57 A$9.21 A$10.49 A$5.05 A$12.73 A$13.69 A$15.61 A$6.65 A$16.89 A$18.17 A$20.73
Large A$2.25 A$5.45 A$5.85 A$6.65 A$4.25 A$10.65 A$11.45 A$13.05 A$6.25 A$15.85 A$17.05 A$19.45 A$8.25 A$21.05 A$22.65 A$25.85
Huge A$2.65 A$6.49 A$6.97 A$7.93 A$5.05 A$12.73 A$13.69 A$15.61 A$7.45 A$18.97 A$20.41 A$23.29 A$9.85 A$25.21 A$27.13 A$30.97
Amber, Jet, Obsidian Tiny A$1.45 A$3.37 A$3.61 A$4.09 A$2.65 A$6.49 A$6.97 A$7.93 A$3.85 A$9.61 A$10.33 A$11.77 A$5.05 A$12.73 A$13.69 A$15.61
Small A$2.05 A$4.93 A$5.29 A$6.01 A$3.85 A$9.61 A$10.33 A$11.77 A$5.65 A$14.29 A$15.37 A$17.53 A$7.45 A$18.97 A$20.41 A$23.29
Medium A$2.65 A$6.49 A$6.97 A$7.93 A$5.05 A$12.73 A$13.69 A$15.61 A$7.45 A$18.97 A$20.41 A$23.29 A$9.85 A$25.21 A$27.13 A$30.97
Large A$3.25 A$8.05 A$8.65 A$9.85 A$6.25 A$15.85 A$17.05 A$19.45 A$9.25 A$23.65 A$25.45 A$29.05 A$12.25 A$31.45 A$33.85 A$38.65
Huge A$3.85 A$9.61 A$10.33 A$11.77 A$7.45 A$18.97 A$20.41 A$23.29 A$11.05 A$28.33 A$30.49 A$34.81 A$14.65 A$37.69 A$40.57 A$46.33
Ankhstone, Moonstone, Rose Quartz, Smoky Quartz, Tiny A$1.85 A$4.41 A$4.73 A$5.37 A$3.45 A$8.57 A$9.21 A$10.49 A$5.05 A$12.73 A$13.69 A$15.61 A$6.65 A$16.89 A$18.17 A$20.73
Small A$2.65 A$6.49 A$6.97 A$7.93 A$5.05 A$12.73 A$13.69 A$15.61 A$7.45 A$18.97 A$20.41 A$23.29 A$9.85 A$25.21 A$27.13 A$30.97
Medium A$3.45 A$8.57 A$9.21 A$10.49 A$6.65 A$16.89 A$18.17 A$20.73 A$9.85 A$25.21 A$27.13 A$30.97 A$13.05 A$33.53 A$36.09 A$41.21
Large A$4.25 A$10.65 A$11.45 A$13.05 A$8.25 A$21.05 A$22.65 A$25.85 A$12.25 A$31.45 A$33.85 A$38.65 A$16.25 A$41.85 A$45.05 A$51.45
Huge A$5.05 A$12.73 A$13.69 A$15.61 A$9.85 A$25.21 A$27.13 A$30.97 A$14.65 A$37.69 A$40.57 A$46.33 A$19.45 A$50.17 A$54.01 A$61.69
Agate, Onyx, Chrysoprase, Tiger's Eye, Citrine, Zircon, Jasper Tiny A$2.65 A$6.49 A$6.97 A$7.93 A$5.05 A$12.73 A$13.69 A$15.61 A$7.45 A$18.97 A$20.41 A$23.29 A$9.85 A$25.21 A$27.13 A$30.97
Small A$3.85 A$9.61 A$10.33 A$11.77 A$7.45 A$18.97 A$20.41 A$23.29 A$11.05 A$28.33 A$30.49 A$34.81 A$14.65 A$37.69 A$40.57 A$46.33
Medium A$5.05 A$12.73 A$13.69 A$15.61 A$9.85 A$25.21 A$27.13 A$30.97 A$14.65 A$37.69 A$40.57 A$46.33 A$19.45 A$50.17 A$54.01 A$61.69
Large A$6.25 A$15.85 A$17.05 A$19.45 A$12.25 A$31.45 A$33.85 A$38.65 A$18.25 A$47.05 A$50.65 A$57.85 A$24.25 A$62.65 A$67.45 A$77.05
Huge A$7.45 A$18.97 A$20.41 A$23.29 A$14.65 A$37.69 A$40.57 A$46.33 A$21.85 A$56.41 A$60.73 A$69.37 A$29.05 A$75.13 A$80.89 A$92.41
Amethyst, Malachite, Cornelian, Olivine, Jade, Tourmaline, Lapis Lazuli, Turquoise Tiny A$3.45 A$8.57 A$9.21 A$10.49 A$6.65 A$16.89 A$18.17 A$20.73 A$9.85 A$25.21 A$27.13 A$30.97 A$13.05 A$33.53 A$36.09 A$41.21
Small A$5.05 A$12.73 A$13.69 A$15.61 A$9.85 A$25.21 A$27.13 A$30.97 A$14.65 A$37.69 A$40.57 A$46.33 A$19.45 A$50.17 A$54.01 A$61.69
Medium A$6.65 A$16.89 A$18.17 A$20.73 A$13.05 A$33.53 A$36.09 A$41.21 A$19.45 A$50.17 A$54.01 A$61.69 A$25.85 A$66.81 A$71.93 A$82.17
Large A$8.25 A$21.05 A$22.65 A$25.85 A$16.25 A$41.85 A$45.05 A$51.45 A$24.25 A$62.65 A$67.45 A$77.05 A$32.25 A$83.45 A$89.85 A$102.65
Huge A$9.85 A$25.21 A$27.13 A$30.97 A$19.45 A$50.17 A$54.01 A$61.69 A$29.05 A$75.13 A$80.89 A$92.41 A$38.65 A$100.09 A$107.77 A$123.13
Aquamarine, Opal, Rose Beryl Tiny A$4.25 A$10.65 A$11.45 A$13.05 A$8.25 A$21.05 A$22.65 A$25.85 A$12.25 A$31.45 A$33.85 A$38.65 A$16.25 A$41.85 A$45.05 A$51.45
Small A$6.25 A$15.85 A$17.05 A$19.45 A$12.25 A$31.45 A$33.85 A$38.65 A$18.25 A$47.05 A$50.65 A$57.85 A$24.25 A$62.65 A$67.45 A$77.05
Medium A$8.25 A$21.05 A$22.65 A$25.85 A$16.25 A$41.85 A$45.05 A$51.45 A$24.25 A$62.65 A$67.45 A$77.05 A$32.25 A$83.45 A$89.85 A$102.65
Large A$10.25 A$26.25 A$28.25 A$32.25 A$20.25 A$52.25 A$56.25 A$64.25 A$30.25 A$78.25 A$84.25 A$96.25 A$40.25 A$104.25 A$112.25 A$128.25
Huge A$12.25 A$31.45 A$33.85 A$38.65 A$24.25 A$62.65 A$67.45 A$77.05 A$36.25 A$93.85 A$101.05 A$115.45 A$48.25 A$125.05 A$134.65 A$153.85
Alexandrite, Ruby, Emerald, Sapphire, Garnet, Topaz, Heliodor Tiny A$4.65 A$11.69 A$12.57 A$14.33 A$9.05 A$23.13 A$24.89 A$28.41 A$13.45 A$34.57 A$37.21 A$42.49 A$17.85 A$46.01 A$49.53 A$56.57
Small A$6.85 A$17.41 A$18.73 A$21.37 A$13.45 A$34.57 A$37.21 A$42.49 A$20.05 A$51.73 A$55.69 A$63.61 A$26.65 A$68.89 A$74.17 A$84.73
Medium A$9.05 A$23.13 A$24.89 A$28.41 A$17.85 A$46.01 A$49.53 A$56.57 A$26.65 A$68.89 A$74.17 A$84.73 A$35.45 A$91.77 A$98.81 A$112.89
Large A$11.25 A$28.85 A$31.05 A$35.45 A$22.25 A$57.45 A$61.85 A$70.65 A$33.25 A$86.05 A$92.65 A$105.85 A$44.25 A$114.65 A$123.45 A$141.05
Huge A$13.45 A$34.57 A$37.21 A$42.49 A$26.65 A$68.89 A$74.17 A$84.73 A$39.85 A$103.21 A$111.13 A$126.97 A$53.05 A$137.53 A$148.09 A$169.21
Corundum, Diamond, Octarine Tiny A$5.05 A$12.73 A$13.69 A$15.61 A$9.85 A$25.21 A$27.13 A$30.97 A$14.65 A$37.69 A$40.57 A$46.33 A$19.45 A$50.17 A$54.01 A$61.69
Small A$7.45 A$18.97 A$20.41 A$23.29 A$14.65 A$37.69 A$40.57 A$46.33 A$21.85 A$56.41 A$60.73 A$69.37 A$29.05 A$75.13 A$80.89 A$92.41
Medium A$9.85 A$25.21 A$27.13 A$30.97 A$19.45 A$50.17 A$54.01 A$61.69 A$29.05 A$75.13 A$80.89 A$92.41 A$38.65 A$100.09 A$107.77 A$123.13
Large A$12.25 A$31.45 A$33.85 A$38.65 A$24.25 A$62.65 A$67.45 A$77.05 A$36.25 A$93.85 A$101.05 A$115.45 A$48.25 A$125.05 A$134.65 A$153.85
Huge A$14.65 A$37.69 A$40.57 A$46.33 A$29.05 A$75.13 A$80.89 A$92.41 A$43.45 A$112.57 A$121.21 A$138.49 A$57.85 A$150.01 A$161.53 A$184.57
Table of cut gem values for value group 1
Material Size Low Average High Very High
Flawed Good Better Best Flawed Good Better Best Flawed Good Better Best Flawed Good Better Best
Quartz Tiny A$1.15 A$2.59 A$2.77 A$3.13 A$2.05 A$4.93 A$5.29 A$6.01 A$2.95 A$7.27 A$7.81 A$8.89 A$3.85 A$9.61 A$10.33 A$11.77
Small A$1.60 A$3.76 A$4.03 A$4.57 A$2.95 A$7.27 A$7.81 A$8.89 A$4.30 A$10.78 A$11.59 A$13.21 A$5.65 A$14.29 A$15.37 A$17.53
Medium A$2.05 A$4.93 A$5.29 A$6.01 A$3.85 A$9.61 A$10.33 A$11.77 A$5.65 A$14.29 A$15.37 A$17.53 A$7.45 A$18.97 A$20.41 A$23.29
Large A$2.50 A$6.10 A$6.55 A$7.45 A$4.75 A$11.95 A$12.85 A$14.65 A$7.00 A$17.80 A$19.15 A$21.85 A$9.25 A$23.65 A$25.45 A$29.05
Huge A$2.95 A$7.27 A$7.81 A$8.89 A$5.65 A$14.29 A$15.37 A$17.53 A$8.35 A$21.31 A$22.93 A$26.17 A$11.05 A$28.33 A$30.49 A$34.81
Amber, Jet, Obsidian Tiny A$1.60 A$3.76 A$4.03 A$4.57 A$2.95 A$7.27 A$7.81 A$8.89 A$4.30 A$10.78 A$11.59 A$13.21 A$5.65 A$14.29 A$15.37 A$17.53
Small A$2.28 A$5.52 A$5.92 A$6.73 A$4.30 A$10.78 A$11.59 A$13.21 A$6.33 A$16.05 A$17.26 A$19.69 A$8.35 A$21.31 A$22.93 A$26.17
Medium A$2.95 A$7.27 A$7.81 A$8.89 A$5.65 A$14.29 A$15.37 A$17.53 A$8.35 A$21.31 A$22.93 A$26.17 A$11.05 A$28.33 A$30.49 A$34.81
Large A$3.63 A$9.03 A$9.70 A$11.05 A$7.00 A$17.80 A$19.15 A$21.85 A$10.38 A$26.58 A$28.60 A$32.65 A$13.75 A$35.35 A$38.05 A$43.45
Huge A$4.30 A$10.78 A$11.59 A$13.21 A$8.35 A$21.31 A$22.93 A$26.17 A$12.40 A$31.84 A$34.27 A$39.13 A$16.45 A$42.37 A$45.61 A$52.09
Ankhstone, Moonstone, Rose Quartz, Smoky Quartz, Tiny A$2.05 A$4.93 A$5.29 A$6.01 A$3.85 A$9.61 A$10.33 A$11.77 A$5.65 A$14.29 A$15.37 A$17.53 A$7.45 A$18.97 A$20.41 A$23.29
Small A$2.95 A$7.27 A$7.81 A$8.89 A$5.65 A$14.29 A$15.37 A$17.53 A$8.35 A$21.31 A$22.93 A$26.17 A$11.05 A$28.33 A$30.49 A$34.81
Medium A$3.85 A$9.61 A$10.33 A$11.77 A$7.45 A$18.97 A$20.41 A$23.29 A$11.05 A$28.33 A$30.49 A$34.81 A$14.65 A$37.69 A$40.57 A$46.33
Large A$4.75 A$11.95 A$12.85 A$14.65 A$9.25 A$23.65 A$25.45 A$29.05 A$13.75 A$35.35 A$38.05 A$43.45 A$18.25 A$47.05 A$50.65 A$57.85
Huge A$5.65 A$14.29 A$15.37 A$17.53 A$11.05 A$28.33 A$30.49 A$34.81 A$16.45 A$42.37 A$45.61 A$52.09 A$21.85 A$56.41 A$60.73 A$69.37
Agate, Onyx, Chrysoprase, Tiger's Eye, Citrine, Zircon, Jasper Tiny A$2.95 A$7.27 A$7.81 A$8.89 A$5.65 A$14.29 A$15.37 A$17.53 A$8.35 A$21.31 A$22.93 A$26.17 A$11.05 A$28.33 A$30.49 A$34.81
Small A$4.30 A$10.78 A$11.59 A$13.21 A$8.35 A$21.31 A$22.93 A$26.17 A$12.40 A$31.84 A$34.27 A$39.13 A$16.45 A$42.37 A$45.61 A$52.09
Medium A$5.65 A$14.29 A$15.37 A$17.53 A$11.05 A$28.33 A$30.49 A$34.81 A$16.45 A$42.37 A$45.61 A$52.09 A$21.85 A$56.41 A$60.73 A$69.37
Large A$7.00 A$17.80 A$19.15 A$21.85 A$13.75 A$35.35 A$38.05 A$43.45 A$20.50 A$52.90 A$56.95 A$65.05 A$27.25 A$70.45 A$75.85 A$86.65
Huge A$8.35 A$21.31 A$22.93 A$26.17 A$16.45 A$42.37 A$45.61 A$52.09 A$24.55 A$63.43 A$68.29 A$78.01 A$32.65 A$84.49 A$90.97 A$103.93
Amethyst, Malachite, Cornelian, Olivine, Jade, Tourmaline, Lapis Lazuli, Turquoise Tiny A$3.85 A$9.61 A$10.33 A$11.77 A$7.45 A$18.97 A$20.41 A$23.29 A$11.05 A$28.33 A$30.49 A$34.81 A$14.65 A$37.69 A$40.57 A$46.33
Small A$5.65 A$14.29 A$15.37 A$17.53 A$11.05 A$28.33 A$30.49 A$34.81 A$16.45 A$42.37 A$45.61 A$52.09 A$21.85 A$56.41 A$60.73 A$69.37
Medium A$7.45 A$18.97 A$20.41 A$23.29 A$14.65 A$37.69 A$40.57 A$46.33 A$21.85 A$56.41 A$60.73 A$69.37 A$29.05 A$75.13 A$80.89 A$92.41
Large A$9.25 A$23.65 A$25.45 A$29.05 A$18.25 A$47.05 A$50.65 A$57.85 A$27.25 A$70.45 A$75.85 A$86.65 A$36.25 A$93.85 A$101.05 A$115.45
Huge A$11.05 A$28.33 A$30.49 A$34.81 A$21.85 A$56.41 A$60.73 A$69.37 A$32.65 A$84.49 A$90.97 A$103.93 A$43.45 A$112.57 A$121.21 A$138.49
Aquamarine, Opal, Rose Beryl Tiny A$4.75 A$11.95 A$12.85 A$14.65 A$9.25 A$23.65 A$25.45 A$29.05 A$13.75 A$35.35 A$38.05 A$43.45 A$18.25 A$47.05 A$50.65 A$57.85
Small A$7.00 A$17.80 A$19.15 A$21.85 A$13.75 A$35.35 A$38.05 A$43.45 A$20.50 A$52.90 A$56.95 A$65.05 A$27.25 A$70.45 A$75.85 A$86.65
Medium A$9.25 A$23.65 A$25.45 A$29.05 A$18.25 A$47.05 A$50.65 A$57.85 A$27.25 A$70.45 A$75.85 A$86.65 A$36.25 A$93.85 A$101.05 A$115.45
Large A$11.50 A$29.50 A$31.75 A$36.25 A$22.75 A$58.75 A$63.25 A$72.25 A$34.00 A$88.00 A$94.75 A$108.25 A$45.25 A$117.25 A$126.25 A$144.25
Huge A$13.75 A$35.35 A$38.05 A$43.45 A$27.25 A$70.45 A$75.85 A$86.65 A$40.75 A$105.55 A$113.65 A$129.85 A$54.25 A$140.65 A$151.45 A$173.05
Alexandrite, Ruby, Emerald, Sapphire, Garnet, Topaz, Heliodor Tiny A$5.20 A$13.12 A$14.11 A$16.09 A$10.15 A$25.99 A$27.97 A$31.93 A$15.10 A$38.86 A$41.83 A$47.77 A$20.05 A$51.73 A$55.69 A$63.61
Small A$7.68 A$19.56 A$21.04 A$24.01 A$15.10 A$38.86 A$41.83 A$47.77 A$22.53 A$58.17 A$62.62 A$71.53 A$29.95 A$77.47 A$83.41 A$95.29
Medium A$10.15 A$25.99 A$27.97 A$31.93 A$20.05 A$51.73 A$55.69 A$63.61 A$29.95 A$77.47 A$83.41 A$95.29 A$39.85 A$103.21 A$111.13 A$126.97
Large A$12.63 A$32.43 A$34.90 A$39.85 A$25.00 A$64.60 A$69.55 A$79.45 A$37.38 A$96.78 A$104.20 A$119.05 A$49.75 A$128.95 A$138.85 A$158.65
Huge A$15.10 A$38.86 A$41.83 A$47.77 A$29.95 A$77.47 A$83.41 A$95.29 A$44.80 A$116.08 A$124.99 A$142.81 A$59.65 A$154.69 A$166.57 A$190.33
Corundum, Diamond, Octarine Tiny A$5.65 A$14.29 A$15.37 A$17.53 A$11.05 A$28.33 A$30.49 A$34.81 A$16.45 A$42.37 A$45.61 A$52.09 A$21.85 A$56.41 A$60.73 A$69.37
Small A$8.35 A$21.31 A$22.93 A$26.17 A$16.45 A$42.37 A$45.61 A$52.09 A$24.55 A$63.43 A$68.29 A$78.01 A$32.65 A$84.49 A$90.97 A$103.93
Medium A$11.05 A$28.33 A$30.49 A$34.81 A$21.85 A$56.41 A$60.73 A$69.37 A$32.65 A$84.49 A$90.97 A$103.93 A$43.45 A$112.57 A$121.21 A$138.49
Large A$13.75 A$35.35 A$38.05 A$43.45 A$27.25 A$70.45 A$75.85 A$86.65 A$40.75 A$105.55 A$113.65 A$129.85 A$54.25 A$140.65 A$151.45 A$173.05
Huge A$16.45 A$42.37 A$45.61 A$52.09 A$32.65 A$84.49 A$90.97 A$103.93 A$48.85 A$126.61 A$136.33 A$155.77 A$65.05 A$168.73 A$181.69 A$207.61
Table of cut gem values for value group 2
Material Size Low Average High Very High
Flawed Good Better Best Flawed Good Better Best Flawed Good Better Best Flawed Good Better Best
Quartz Tiny A$1.35 A$3.11 A$3.33 A$3.77 A$2.45 A$5.97 A$6.41 A$7.29 A$3.55 A$8.83 A$9.49 A$10.81 A$4.65 A$11.69 A$12.57 A$14.33
Small A$1.90 A$4.54 A$4.87 A$5.53 A$3.55 A$8.83 A$9.49 A$10.81 A$5.20 A$13.12 A$14.11 A$16.09 A$6.85 A$17.41 A$18.73 A$21.37
Medium A$2.45 A$5.97 A$6.41 A$7.29 A$4.65 A$11.69 A$12.57 A$14.33 A$6.85 A$17.41 A$18.73 A$21.37 A$9.05 A$23.13 A$24.89 A$28.41
Large A$3.00 A$7.40 A$7.95 A$9.05 A$5.75 A$14.55 A$15.65 A$17.85 A$8.50 A$21.70 A$23.35 A$26.65 A$11.25 A$28.85 A$31.05 A$35.45
Huge A$3.55 A$8.83 A$9.49 A$10.81 A$6.85 A$17.41 A$18.73 A$21.37 A$10.15 A$25.99 A$27.97 A$31.93 A$13.45 A$34.57 A$37.21 A$42.49
Amber, Jet, Obsidian Tiny A$1.90 A$4.54 A$4.87 A$5.53 A$3.55 A$8.83 A$9.49 A$10.81 A$5.20 A$13.12 A$14.11 A$16.09 A$6.85 A$17.41 A$18.73 A$21.37
Small A$2.73 A$6.69 A$7.18 A$8.17 A$5.20 A$13.12 A$14.11 A$16.09 A$7.68 A$19.56 A$21.04 A$24.01 A$10.15 A$25.99 A$27.97 A$31.93
Medium A$3.55 A$8.83 A$9.49 A$10.81 A$6.85 A$17.41 A$18.73 A$21.37 A$10.15 A$25.99 A$27.97 A$31.93 A$13.45 A$34.57 A$37.21 A$42.49
Large A$4.38 A$10.98 A$11.80 A$13.45 A$8.50 A$21.70 A$23.35 A$26.65 A$12.63 A$32.43 A$34.90 A$39.85 A$16.75 A$43.15 A$46.45 A$53.05
Huge A$5.20 A$13.12 A$14.11 A$16.09 A$10.15 A$25.99 A$27.97 A$31.93 A$15.10 A$38.86 A$41.83 A$47.77 A$20.05 A$51.73 A$55.69 A$63.61
Ankhstone, Moonstone, Rose Quartz, Smoky Quartz, Tiny A$2.45 A$5.97 A$6.41 A$7.29 A$4.65 A$11.69 A$12.57 A$14.33 A$6.85 A$17.41 A$18.73 A$21.37 A$9.05 A$23.13 A$24.89 A$28.41
Small A$3.55 A$8.83 A$9.49 A$10.81 A$6.85 A$17.41 A$18.73 A$21.37 A$10.15 A$25.99 A$27.97 A$31.93 A$13.45 A$34.57 A$37.21 A$42.49
Medium A$4.65 A$11.69 A$12.57 A$14.33 A$9.05 A$23.13 A$24.89 A$28.41 A$13.45 A$34.57 A$37.21 A$42.49 A$17.85 A$46.01 A$49.53 A$56.57
Large A$5.75 A$14.55 A$15.65 A$17.85 A$11.25 A$28.85 A$31.05 A$35.45 A$16.75 A$43.15 A$46.45 A$53.05 A$22.25 A$57.45 A$61.85 A$70.65
Huge A$6.85 A$17.41 A$18.73 A$21.37 A$13.45 A$34.57 A$37.21 A$42.49 A$20.05 A$51.73 A$55.69 A$63.61 A$26.65 A$68.89 A$74.17 A$84.73
Agate, Onyx, Chrysoprase, Tiger's Eye, Citrine, Zircon, Jasper Tiny A$3.55 A$8.83 A$9.49 A$10.81 A$6.85 A$17.41 A$18.73 A$21.37 A$10.15 A$25.99 A$27.97 A$31.93 A$13.45 A$34.57 A$37.21 A$42.49
Small A$5.20 A$13.12 A$14.11 A$16.09 A$10.15 A$25.99 A$27.97 A$31.93 A$15.10 A$38.86 A$41.83 A$47.77 A$20.05 A$51.73 A$55.69 A$63.61
Medium A$6.85 A$17.41 A$18.73 A$21.37 A$13.45 A$34.57 A$37.21 A$42.49 A$20.05 A$51.73 A$55.69 A$63.61 A$26.65 A$68.89 A$74.17 A$84.73
Large A$8.50 A$21.70 A$23.35 A$26.65 A$16.75 A$43.15 A$46.45 A$53.05 A$25.00 A$64.60 A$69.55 A$79.45 A$33.25 A$86.05 A$92.65 A$105.85
Huge A$10.15 A$25.99 A$27.97 A$31.93 A$20.05 A$51.73 A$55.69 A$63.61 A$29.95 A$77.47 A$83.41 A$95.29 A$39.85 A$103.21 A$111.13 A$126.97
Amethyst, Malachite, Cornelian, Olivine, Jade, Tourmaline, Lapis Lazuli, Turquoise Tiny A$4.65 A$11.69 A$12.57 A$14.33 A$9.05 A$23.13 A$24.89 A$28.41 A$13.45 A$34.57 A$37.21 A$42.49 A$17.85 A$46.01 A$49.53 A$56.57
Small A$6.85 A$17.41 A$18.73 A$21.37 A$13.45 A$34.57 A$37.21 A$42.49 A$20.05 A$51.73 A$55.69 A$63.61 A$26.65 A$68.89 A$74.17 A$84.73
Medium A$9.05 A$23.13 A$24.89 A$28.41 A$17.85 A$46.01 A$49.53 A$56.57 A$26.65 A$68.89 A$74.17 A$84.73 A$35.45 A$91.77 A$98.81 A$112.89
Large A$11.25 A$28.85 A$31.05 A$35.45 A$22.25 A$57.45 A$61.85 A$70.65 A$33.25 A$86.05 A$92.65 A$105.85 A$44.25 A$114.65 A$123.45 A$141.05
Huge A$13.45 A$34.57 A$37.21 A$42.49 A$26.65 A$68.89 A$74.17 A$84.73 A$39.85 A$103.21 A$111.13 A$126.97 A$53.05 A$137.53 A$148.09 A$169.21
Aquamarine, Opal, Rose Beryl Tiny A$5.75 A$14.55 A$15.65 A$17.85 A$11.25 A$28.85 A$31.05 A$35.45 A$16.75 A$43.15 A$46.45 A$53.05 A$22.25 A$57.45 A$61.85 A$70.65
Small A$8.50 A$21.70 A$23.35 A$26.65 A$16.75 A$43.15 A$46.45 A$53.05 A$25.00 A$64.60 A$69.55 A$79.45 A$33.25 A$86.05 A$92.65 A$105.85
Medium A$11.25 A$28.85 A$31.05 A$35.45 A$22.25 A$57.45 A$61.85 A$70.65 A$33.25 A$86.05 A$92.65 A$105.85 A$44.25 A$114.65 A$123.45 A$141.05
Large A$14.00 A$36.00 A$38.75 A$44.25 A$27.75 A$71.75 A$77.25 A$88.25 A$41.50 A$107.50 A$115.75 A$132.25 A$55.25 A$143.25 A$154.25 A$176.25
Huge A$16.75 A$43.15 A$46.45 A$53.05 A$33.25 A$86.05 A$92.65 A$105.85 A$49.75 A$128.95 A$138.85 A$158.65 A$66.25 A$171.85 A$185.05 A$211.45
Alexandrite, Ruby, Emerald, Sapphire, Garnet, Topaz, Heliodor Tiny A$6.30 A$15.98 A$17.19 A$19.61 A$12.35 A$31.71 A$34.13 A$38.97 A$18.40 A$47.44 A$51.07 A$58.33 A$24.45 A$63.17 A$68.01 A$77.69
Small A$9.33 A$23.85 A$25.66 A$29.29 A$18.40 A$47.44 A$51.07 A$58.33 A$27.48 A$71.04 A$76.48 A$87.37 A$36.55 A$94.63 A$101.89 A$116.41
Medium A$12.35 A$31.71 A$34.13 A$38.97 A$24.45 A$63.17 A$68.01 A$77.69 A$36.55 A$94.63 A$101.89 A$116.41 A$48.65 A$126.09 A$135.77 A$155.13
Large A$15.38 A$39.58 A$42.60 A$48.65 A$30.50 A$78.90 A$84.95 A$97.05 A$45.63 A$118.23 A$127.30 A$145.45 A$60.75 A$157.55 A$169.65 A$193.85
Huge A$18.40 A$47.44 A$51.07 A$58.33 A$36.55 A$94.63 A$101.89 A$116.41 A$54.70 A$141.82 A$152.71 A$174.49 A$72.85 A$189.01 A$203.53 A$232.57
Corundum, Diamond, Octarine Tiny A$6.85 A$17.41 A$18.73 A$21.37 A$13.45 A$34.57 A$37.21 A$42.49 A$20.05 A$51.73 A$55.69 A$63.61 A$26.65 A$68.89 A$74.17 A$84.73
Small A$10.15 A$25.99 A$27.97 A$31.93 A$20.05 A$51.73 A$55.69 A$63.61 A$29.95 A$77.47 A$83.41 A$95.29 A$39.85 A$103.21 A$111.13 A$126.97
Medium A$13.45 A$34.57 A$37.21 A$42.49 A$26.65 A$68.89 A$74.17 A$84.73 A$39.85 A$103.21 A$111.13 A$126.97 A$53.05 A$137.53 A$148.09 A$169.21
Large A$16.75 A$43.15 A$46.45 A$53.05 A$33.25 A$86.05 A$92.65 A$105.85 A$49.75 A$128.95 A$138.85 A$158.65 A$66.25 A$171.85 A$185.05 A$211.45
Huge A$20.05 A$51.73 A$55.69 A$63.61 A$39.85 A$103.21 A$111.13 A$126.97 A$59.65 A$154.69 A$166.57 A$190.33 A$79.45 A$206.17 A$222.01 A$253.69
Table of cut gem values for value group 3
Material Size Low Average High Very High
Flawed Good Better Best Flawed Good Better Best Flawed Good Better Best Flawed Good Better Best
Quartz Tiny A$1.75 A$4.15 A$4.45 A$5.05 A$3.25 A$8.05 A$8.65 A$9.85 A$4.75 A$11.95 A$12.85 A$14.65 A$6.25 A$15.85 A$17.05 A$19.45
Small A$2.50 A$6.10 A$6.55 A$7.45 A$4.75 A$11.95 A$12.85 A$14.65 A$7.00 A$17.80 A$19.15 A$21.85 A$9.25 A$23.65 A$25.45 A$29.05
Medium A$3.25 A$8.05 A$8.65 A$9.85 A$6.25 A$15.85 A$17.05 A$19.45 A$9.25 A$23.65 A$25.45 A$29.05 A$12.25 A$31.45 A$33.85 A$38.65
Large A$4.00 A$10.00 A$10.75 A$12.25 A$7.75 A$19.75 A$21.25 A$24.25 A$11.50 A$29.50 A$31.75 A$36.25 A$15.25 A$39.25 A$42.25 A$48.25
Huge A$4.75 A$11.95 A$12.85 A$14.65 A$9.25 A$23.65 A$25.45 A$29.05 A$13.75 A$35.35 A$38.05 A$43.45 A$18.25 A$47.05 A$50.65 A$57.85
Amber, Jet, Obsidian Tiny A$2.50 A$6.10 A$6.55 A$7.45 A$4.75 A$11.95 A$12.85 A$14.65 A$7.00 A$17.80 A$19.15 A$21.85 A$9.25 A$23.65 A$25.45 A$29.05
Small A$3.63 A$9.03 A$9.70 A$11.05 A$7.00 A$17.80 A$19.15 A$21.85 A$10.38 A$26.58 A$28.60 A$32.65 A$13.75 A$35.35 A$38.05 A$43.45
Medium A$4.75 A$11.95 A$12.85 A$14.65 A$9.25 A$23.65 A$25.45 A$29.05 A$13.75 A$35.35 A$38.05 A$43.45 A$18.25 A$47.05 A$50.65 A$57.85
Large A$5.88 A$14.88 A$16.00 A$18.25 A$11.50 A$29.50 A$31.75 A$36.25 A$17.13 A$44.13 A$47.50 A$54.25 A$22.75 A$58.75 A$63.25 A$72.25
Huge A$7.00 A$17.80 A$19.15 A$21.85 A$13.75 A$35.35 A$38.05 A$43.45 A$20.50 A$52.90 A$56.95 A$65.05 A$27.25 A$70.45 A$75.85 A$86.65
Ankhstone, Moonstone, Rose Quartz, Smoky Quartz, Tiny A$3.25 A$8.05 A$8.65 A$9.85 A$6.25 A$15.85 A$17.05 A$19.45 A$9.25 A$23.65 A$25.45 A$29.05 A$12.25 A$31.45 A$33.85 A$38.65
Small A$4.75 A$11.95 A$12.85 A$14.65 A$9.25 A$23.65 A$25.45 A$29.05 A$13.75 A$35.35 A$38.05 A$43.45 A$18.25 A$47.05 A$50.65 A$57.85
Medium A$6.25 A$15.85 A$17.05 A$19.45 A$12.25 A$31.45 A$33.85 A$38.65 A$18.25 A$47.05 A$50.65 A$57.85 A$24.25 A$62.65 A$67.45 A$77.05
Large A$7.75 A$19.75 A$21.25 A$24.25 A$15.25 A$39.25 A$42.25 A$48.25 A$22.75 A$58.75 A$63.25 A$72.25 A$30.25 A$78.25 A$84.25 A$96.25
Huge A$9.25 A$23.65 A$25.45 A$29.05 A$18.25 A$47.05 A$50.65 A$57.85 A$27.25 A$70.45 A$75.85 A$86.65 A$36.25 A$93.85 A$101.05 A$115.45
Agate, Onyx, Chrysoprase, Tiger's Eye, Citrine, Zircon, Jasper Tiny A$4.75 A$11.95 A$12.85 A$14.65 A$9.25 A$23.65 A$25.45 A$29.05 A$13.75 A$35.35 A$38.05 A$43.45 A$18.25 A$47.05 A$50.65 A$57.85
Small A$7.00 A$17.80 A$19.15 A$21.85 A$13.75 A$35.35 A$38.05 A$43.45 A$20.50 A$52.90 A$56.95 A$65.05 A$27.25 A$70.45 A$75.85 A$86.65
Medium A$9.25 A$23.65 A$25.45 A$29.05 A$18.25 A$47.05 A$50.65 A$57.85 A$27.25 A$70.45 A$75.85 A$86.65 A$36.25 A$93.85 A$101.05 A$115.45
Large A$11.50 A$29.50 A$31.75 A$36.25 A$22.75 A$58.75 A$63.25 A$72.25 A$34.00 A$88.00 A$94.75 A$108.25 A$45.25 A$117.25 A$126.25 A$144.25
Huge A$13.75 A$35.35 A$38.05 A$43.45 A$27.25 A$70.45 A$75.85 A$86.65 A$40.75 A$105.55 A$113.65 A$129.85 A$54.25 A$140.65 A$151.45 A$173.05
Amethyst, Malachite, Cornelian, Olivine, Jade, Tourmaline, Lapis Lazuli, Turquoise Tiny A$6.25 A$15.85 A$17.05 A$19.45 A$12.25 A$31.45 A$33.85 A$38.65 A$18.25 A$47.05 A$50.65 A$57.85 A$24.25 A$62.65 A$67.45 A$77.05
Small A$9.25 A$23.65 A$25.45 A$29.05 A$18.25 A$47.05 A$50.65 A$57.85 A$27.25 A$70.45 A$75.85 A$86.65 A$36.25 A$93.85 A$101.05 A$115.45
Medium A$12.25 A$31.45 A$33.85 A$38.65 A$24.25 A$62.65 A$67.45 A$77.05 A$36.25 A$93.85 A$101.05 A$115.45 A$48.25 A$125.05 A$134.65 A$153.85
Large A$15.25 A$39.25 A$42.25 A$48.25 A$30.25 A$78.25 A$84.25 A$96.25 A$45.25 A$117.25 A$126.25 A$144.25 A$60.25 A$156.25 A$168.25 A$192.25
Huge A$18.25 A$47.05 A$50.65 A$57.85 A$36.25 A$93.85 A$101.05 A$115.45 A$54.25 A$140.65 A$151.45 A$173.05 A$72.25 A$187.45 A$201.85 A$230.65
Aquamarine, Opal, Rose Beryl Tiny A$7.75 A$19.75 A$21.25 A$24.25 A$15.25 A$39.25 A$42.25 A$48.25 A$22.75 A$58.75 A$63.25 A$72.25 A$30.25 A$78.25 A$84.25 A$96.25
Small A$11.50 A$29.50 A$31.75 A$36.25 A$22.75 A$58.75 A$63.25 A$72.25 A$34.00 A$88.00 A$94.75 A$108.25 A$45.25 A$117.25 A$126.25 A$144.25
Medium A$15.25 A$39.25 A$42.25 A$48.25 A$30.25 A$78.25 A$84.25 A$96.25 A$45.25 A$117.25 A$126.25 A$144.25 A$60.25 A$156.25 A$168.25 A$192.25
Large A$19.00 A$49.00 A$52.75 A$60.25 A$37.75 A$97.75 A$105.25 A$120.25 A$56.50 A$146.50 A$157.75 A$180.25 A$75.25 A$195.25 A$210.25 A$240.25
Huge A$22.75 A$58.75 A$63.25 A$72.25 A$45.25 A$117.25 A$126.25 A$144.25 A$67.75 A$175.75 A$189.25 A$216.25 A$90.25 A$234.25 A$252.25 A$288.25
Alexandrite, Ruby, Emerald, Sapphire, Garnet, Topaz, Heliodor Tiny A$8.50 A$21.70 A$23.35 A$26.65 A$16.75 A$43.15 A$46.45 A$53.05 A$25.00 A$64.60 A$69.55 A$79.45 A$33.25 A$86.05 A$92.65 A$105.85
Small A$12.63 A$32.43 A$34.90 A$39.85 A$25.00 A$64.60 A$69.55 A$79.45 A$37.38 A$96.78 A$104.20 A$119.05 A$49.75 A$128.95 A$138.85 A$158.65
Medium A$16.75 A$43.15 A$46.45 A$53.05 A$33.25 A$86.05 A$92.65 A$105.85 A$49.75 A$128.95 A$138.85 A$158.65 A$66.25 A$171.85 A$185.05 A$211.45
Large A$20.88 A$53.88 A$58.00 A$66.25 A$41.50 A$107.50 A$115.75 A$132.25 A$62.13 A$161.13 A$173.50 A$198.25 A$82.75 A$214.75 A$231.25 A$264.25
Huge A$25.00 A$64.60 A$69.55 A$79.45 A$49.75 A$128.95 A$138.85 A$158.65 A$74.50 A$193.30 A$208.15 A$237.85 A$99.25 A$257.65 A$277.45 A$317.05
Corundum, Diamond, Octarine Tiny A$9.25 A$23.65 A$25.45 A$29.05 A$18.25 A$47.05 A$50.65 A$57.85 A$27.25 A$70.45 A$75.85 A$86.65 A$36.25 A$93.85 A$101.05 A$115.45
Small A$13.75 A$35.35 A$38.05 A$43.45 A$27.25 A$70.45 A$75.85 A$86.65 A$40.75 A$105.55 A$113.65 A$129.85 A$54.25 A$140.65 A$151.45 A$173.05
Medium A$18.25 A$47.05 A$50.65 A$57.85 A$36.25 A$93.85 A$101.05 A$115.45 A$54.25 A$140.65 A$151.45 A$173.05 A$72.25 A$187.45 A$201.85 A$230.65
Large A$22.75 A$58.75 A$63.25 A$72.25 A$45.25 A$117.25 A$126.25 A$144.25 A$67.75 A$175.75 A$189.25 A$216.25 A$90.25 A$234.25 A$252.25 A$288.25
Huge A$27.25 A$70.45 A$75.85 A$86.65 A$54.25 A$140.65 A$151.45 A$173.05 A$81.25 A$210.85 A$227.05 A$259.45 A$108.25 A$281.05 A$302.65 A$345.85

Gem Weight

The weight of a raw gem depends on the gem material and size, and seems to be quantized into 13 distinct steps:

Raw gem weights and descriptions
Step 0 1 2 3 4 5 6 7 8 9 10 11 12
Glance chip fragment shard pebble
Look tiny extremely small very small small
Appraise too small tiny small medium-sized large huge too large
Agate 0.01 0.02 0.07 0.17 0.33 0.56 0.89 1.33 1.90 2.60 3.46 - -
Alexandrite 0.01 0.03 0.10 0.24 0.47 0.81 1.28 1.91 2.73 3.74 4.98 - -
Amber 0.01 0.01 0.03 0.07 0.14 0.23 0.37 0.55 0.79 1.08 1.44 1.87 2.37
Amethyst 0.01 0.02 0.07 0.17 0.33 0.57 0.91 1.36 1.93 2.65 3.53 4.58 5.82
Ankhstone 0.01 0.02 0.07 0.17 0.33 0.57 0.91 1.36 1.93 2.65 3.53 4.58 5.82
Aquamarine 0.01 0.02 0.07 0.17 0.34 0.59 0.93 1.39 1.98 2.71 3.61 - -
Chrysoprase 0.01 0.02 0.07 0.17 0.33 0.56 0.90 1.34 1.90 2.61 3.47 4.58 5.82
Citrine 0.01 0.02 0.07 0.17 0.33 0.57 0.91 1.36 1.93 2.65 3.53 4.58 5.82
Cornelian 0.01 0.02 0.07 0.17 0.33 0.56 0.90 1.34 1.90 2.61 3.47 4.51 5.73
Corundum 0.01 0.03 0.11 0.26 0.50 0.86 1.37 2.05 2.92 4.00 5.32 - -
Diamond 0.01 0.03 0.09 0.21 0.41 0.70 1.11 1.66 2.37 3.25 4.33 - -
Emerald 0.01 0.02 0.07 0.17 0.34 0.59 0.93 1.40 1.99 2.73 3.63 4.71 5.99
Garnet 0.01 0.03 0.10 0.24 0.47 0.81 1.29 1.92 2.73 3.75 4.99 6.48 8.24
Heliodor 0.01 0.02 0.07 0.18 0.35 0.60 0.95 1.42 2.02 2.77 3.68 - -
Jade 0.01 0.03 0.09 0.20 0.40 0.69 1.10 1.64 2.33 3.20 4.26 - -
Jasper 0.01 0.02 0.07 0.18 0.34 0.59 0.94 1.41 2.00 2.75 3.65 - -
Jet 0.01 0.01 0.03 0.08 0.16 0.27 0.44 0.65 0.93 1.27 1.69 - -
Lapis Lazuli 0.01 0.02 0.07 0.18 0.34 0.59 0.94 1.41 2.00 2.75 3.66 - -
Malachite 0.01 0.03 0.11 0.25 0.49 0.84 1.34 2.00 2.84 3.90 5.19 - -
Moonstone 0.01 0.02 0.07 0.16 0.32 0.56 0.88 1.32 1.88 2.58 3.43 4.45 5.66
Obsidian 0.01 0.02 0.07 0.16 0.31 0.53 0.85 1.27 1.80 2.48 3.29 - -
Octarine 0.01 0.07 0.24 0.57 1.11 1.92 3.05 4.55 6.48 8.89 11.83 - -
Olivine 0.01 0.03 0.10 0.25 0.48 0.83 1.32 1.97 2.81 3.85 5.12 - -
Onyx 0.01 0.02 0.07 0.17 0.33 0.56 0.90 1.34 1.90 2.61 3.47 4.51 5.73
Opal 0.01 0.02 0.06 0.14 0.28 0.48 0.75 1.13 1.60 2.20 2.93 3.80 4.83
Quartz 0.01 0.02 0.07 0.17 0.33 0.57 0.91 1.36 1.93 2.65 3.53 4.58 5.82
Rose Beryl 0.01 0.02 0.07 0.18 0.35 0.60 0.95 1.42 2.02 2.77 3.68 - -
Rose Quartz 0.01 0.02 0.07 0.17 0.33 0.57 0.91 1.36 1.93 2.65 3.53 4.58 5.82
Ruby 0.01 0.03 0.11 0.26 0.50 0.87 1.38 2.05 2.92 4.01 5.34 6.93 8.81
Sapphire 0.01 0.03 0.11 0.26 0.50 0.86 1.37 2.04 2.91 3.99 5.31 6.89 8.77
Smoky Quartz 0.01 0.02 0.07 0.17 0.33 0.57 0.91 1.36 1.93 2.65 3.53 4.58 5.82
Tiger's Eye 0.01 0.02 0.07 0.17 0.33 0.58 0.92 1.37 1.95 2.68 3.56 - -
Topaz 0.01 0.03 0.10 0.23 0.44 0.77 1.22 1.82 2.59 3.55 4.73 6.13 7.80
Tourmaline 0.01 0.02 0.08 0.20 0.39 0.67 1.06 1.59 2.26 3.10 4.13 - -
Turquoise 0.01 0.02 0.07 0.17 0.34 0.58 0.93 1.38 1.97 2.70 3.59 - -
Zircon 0.01 0.04 0.13 0.30 0.58 1.00 1.59 2.38 3.39 4.65 6.19 - -

Long (look) and short (glance) descriptions, as well as the gem size (appraise) roughly map to the weight steps but overlap.

Gems bought from Jeromee are always either step 4, 8 or 10. Gems from a certain lock box in Sto Lat seem to be either 10 or 12. Copperhead mines gems have not been evaluated yet.

Gem weights can be determined with a precision of two decimals. Either the weights are explicitly coded as such, or the underlying weight mechanism of the mud or the available measurement tools limit the precision (unknown).

Cut gem weights only depend on gem material and size, while the cut itself seems not to have any effect. Cut gems always seem to be the lower of the two weights for a given cut size; i.e. 3, 5, 7 or 9.

Successful shaving removes one level, less successful shaving two levels.

All gem weights seem to use the same decay-function, multiplied by the specific density of the gem material. Doing some preliminary curve-fitting results in a third order polynomial and alternatively a power function with a very good fit, but very likely not the actual formulae used by the mud due to both having rather odd coefficients.

Random Notes

The highest cut a certain material/quality combination can take seems to be a function of the gem quality, its hardness, and maybe transparency versus the number of facets the cut has. The exact relationship hasn't been determined yet and the material table has been populated with the results of gems actually bought and appraised. The "measured" values do seem to correlate with gem-hardness (Moh-scale from minerals.net) somewhat, might also be coincidence. More research required.

Cuts with the same number of facets are likely treated as the same; of those cuts that share the same number of facets, only ever one appears as being the highest cut in the appraise information.

Skillchecks might be tiered by result group and not directly from number of facets; at 250ish bonus I almost always get a successful result for any cut up to brilliant, but have a high chance of producing a cloudy/flawed/chipped cut for anything from result group 3.

Cutting and possibly chipping skillchecks seem to depend on the gem quality and cut type (result group) but not on material or size of the raw gem; the higher the gem quality, the lower the skill requirement. When trying to create group 3 cuts (heart-shaped ... princess) with a cr.sm.ge.cutting bonus of 266 I virtually always succeed for very high quality gems, about 50% success rate for high, about 25% success rate for average and almost always fail for low quality gems. Thalic (talk) 03:24, 17 May 2019 (EDT)

Fancy Gems

Gems from a certain footlocker in Sto Lat have an additional colour-specific adjective in their description:

  • blood red ruby
  • dark green emerald
  • fiery red opal
  • fiery yellow topaz
  • green-gold citrine
  • misty grey moonstone
  • mysterious black onyx
  • silvery blue sapphire
  • smokey orange amber
  • soft purple amethyst
  • sparkling white ankhstone
  • wine red garnet

Apart from the additional adjective the fancy gems seem to be exactly the same as all the other gems.

When chipping a gem into two pieces, the fancy colour only stays with the main piece, while the other piece reverts to the basic colour for the gem material.