general/gemstones
Surf Wiki
Helenite
Artificial glass made from volcanic ash
Oligoclase
Sodium-rich plagioclase feldspar mineral
Taaffeite
Rare gemstone
Dioptase
Cyclosilicate mineral
Eudialyte
Cyclosilicate mineral
Goldstone (glass)
Type of glass
Peridot
Green gem-quality mineral
Kyanite
Aluminosilicate mineral
Moldavite
Green natural glass possibly formed by a meteorite impact
Sphalerite
Zinc-iron sulfide mineral
Hiddenite
Yellowish or greenish green mineral
Gemstone irradiation
Process to enhance a gemstone's optical properties
Rhodonite
Single chain manganese inosilicate (MnSiO<sub>3</sub>)
Thunderegg
Nodule-like rock, that is formed within rhyolitic volcanic ash layers