Colored by an interaction of iron and aluminum, amethyst is a variety of macrocrystalline quartz that occurs in transparent pastel roses to deep purples and violets. Like many other gemstones, the quality of amethyst varies according to its source.
Uruguayan, Rose de France, Bi-color
Amethyst |
February's Birthstone |
Major Sources |
Australia, Brazil, Kanya, Madagascar, Russia, Sri Lanka, Uruguay & Zambia |
Colors Found |
Pinish Purple to Violet |
Family |
Quasrtz: SiO2 |
Hardness |
7 |
Refractive Index |
1.54 - 1.55; Uniaxial (+) |
Specific Gravity |
2.65 |
Crystal System |
Trigonal |