TOPAZ


All facts and figures taken from the GIA

TOPAZ

Honey yellow. Fiery orange. Cyclamen pink. Icy blue. In warm or cool tones, topaz is a lustrous and brilliant gem. Topaz actually has an exceptionally wide color range that, besides brown, includes various tones and saturations of blue, green, yellow, orange, red, pink, and purple. Colorless topaz is plentiful, and is often treated to give it a blue color. Topaz is also pleochroic, meaning that the gem can show different colors in different crystal directions.


MINERAL: Topaz
CHEMISTRY: Al2(F,OH)2SiO4
COLOR: Yellow, orange, brown, pink to red to purple red, blue , light green and colorless
REFRACTIVE INDEX: 1.619 to 1.627
BIREFRINGENCE: 0.008 to 0.010
SPECIFIC GRAVITY: 3.53
MOHS HARDNESS: 8


Precious topaz is a birthstone for November and blue topaz is a birthstone for December. Blue topaz is the gem of the 4th anniversary and Imperial topaz is the gem of the 23rd anniversary.

FOUND WHERE

Precious_Gemstone_Where_Found_Topaz