AMETHYST


All facts and figures taken from the GIA

AMETHYST

The essence of the color purple, amethyst is beautiful enough for crown jewels yet affordable enough for class rings. Amethyst was as expensive as ruby and emerald until the 19th Century, when Brazil’s large deposits were discovered. It was believed to prevent intoxication in ancient Greek. Today, as the most valued quartz variety, amethyst is in demand for designer pieces and mass-market jewelry alike.


MINERAL: Quartz
CHEMISTRY: SiO2
COLOR: Purple
REFRACTIVE INDEX: 1.544 to 1.553
BIREFRINGENCE: 0.009
SPECIFIC GRAVITY: 2.66
MOHS HARDNESS: 7


Amethyst is the birthstone for February and the gem for the 6th and 17th wedding anniversaries.

FOUND WHERE

Precious_Gemstone_Where_Found_Amethyst