Gemstone Chart |
Natural Amethyst As a member of the quartz family, amethyst is one of the most common, hence under-appreciated, gemstones on the market. Color: purple, violet Categories: semi-precious stone Chemical Composition: SiO2 Crystal Group: Hexagonal Refractive Index: 1.544 - 1.553 Hardness: 7 Density: 2.66 Occurrence: Brazil, Uraguay, Bolivia, Madagascar, Russia, USA, Zambia
| Natural Ametrine Ametrine is a unique semi-precious gemstone that is a blend of citrine and amethyst.It has a warm, soft cream color that shows hints of both its lilac and honey hued parents. Color: purple, violet, yellow Categories: semi-precious stone Chemical Composition: SiO2 Crystal Group: Hexagonal Refractive Index: 1.544 - 1.553 Hardness: 7 Density: 2.66 Occurrence: Brazil, Bolivia
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