ENHANCEMENT CODE H
Click to view AGTA
code.
PROPERTIES
Refractive Index 1.544-1.553
Hardness = 7 (Moh's
Scale)
Specific Gravity = 2.66
Species - Quartz
Optic Character -
Double Refraction.
Phenomena - None
WARNINGS FOR CARE
Ultrasonic: Usually safe
Steamer: Risky
Heat: Fair; color change may occur with
heat
Chemicals that harm:
Hydrofluoric acid, ammonium fluoride
can damage.
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Crystal Structure

Crystal system: Hexagonal (trigonal), compact.
MAJOR SOURCES
Brazil, Bolivia |
Birthstones |