Fire Opal
Hardness ( Moh )
" 5.5 - 6
Crystal System
Specific Gravity
2
Refractive Index
1.42 - 1.43
Birefringence
Colour(s)
Colorless, white, yellow, red, orange, green, brown, black, blue, pink
Cleavage
Francture Type
Conchoidal to uneven
Luster
Streak
White
Transparency
opaque, translucent, transparent
Formula
SiO2·nH2O
Country
Found In Argentina,Australia,Austria,Brazil,Canada,Ecuador,Honduras,Hungary,Indonesia,Kazakhstan,Madagascar,Mexico,Slovakia,Turkey,UK,USA