|The ability of a gemstone to hold a cut or carving is determined by the hardness of its structure. The hardest gemstones, such as diamond, ruby and sapphire, hold facets very well. At the softest end, gemstones are usually cut into smooth cabochon surfaces or carved into beads or decorative pieces, such as statuary, boxes, and dishes.
There are organic gemstones that are created by animals and plants, such as pearl, coral and amber. All of them are too soft for facets but carve very well.
For the purpose of Gor, such gemstones as Schendi diamonds would rate the same as diamonds. An additional term may mean that the color is slightly different or that there are minerals that create a certain effect.
This table shows gemstones in descending order of hardness.
|Diamond||Blue, clear, green, pink, violet, yellow||Marquise, oval, pear, round||10|
|Ruby||Red||Cabochon, oval, round||9|
|Sapphire||Blue, clear, green, pink, violet, yellow||Cabochon, oval, rectangular, round, square||9|
|Star Ruby/Sapphire||Blue, gray, red||Cabochon||9|
|Cat's Eye Sapphire||Yellow||Cabochon||8.5|
|Topaz||Blue, clear, pink, yellow||Oval, pear, rectangular, round||8|
|Emerald||Green||Cabochon, oval, pear, rectangular||7.5-8|
|Amethyst||Purple||Cabochon, oval, pear||7|
|Citrine||Yellow||Emerald, oval, rectangular||7|
|Rose Quartz||Pink||Cabochon, carved||7|
|Quartz||Clear||Emerald, oval, rectangular||7|
|Eyes (Bull, Cat, Hawk, Tiger)||Blue, green, yellow||Cabochon||7|
|Onyx||Black/white, gray/white||Cabochon, carved||7|
|Aventurine||Green, white||Cabochon, carved||7|
|Jade||Blue, green, red, white, yellow||Cabochon, carved||7|
|Peridot||Yellow green||Oval, pear, rectangular, round, square||6.5-7|
|Hematite||Dark grey, black with red interior||Cabochon, carved||6.5|
|Moonstone||Milky white, dull yellow, yellow grey, greenish grey||Cabochon||6-6.5|
|Opal, Fire||Orange, red, yellow||Cabochon, faceted||5.5-6.5|
|Turquoise||Sky blue||Cabochon, carved||5-6|
|Lapis Lazuli||Blue||Cabochon, carved||5-5.5|
|Pearl||Black, grey, pink, white||Bean, egg, pear, round||2.5-4.5|
|Coral||Black, blue, pink, red, white||Cabochon, carved||2.5-2.75|
|Amber||Brown, orange, red, yellow||Cabochon, carved||2.5|