ENHANCEMENT CODE E
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AGTA code.
PROPERTIES
Refractive
Index 1.544-1.553
Hardness = 7 (Moh's
Scale)
Specific Gravity = 2.64-2.71
Species - Quartz.
Optic Character - Aggregate.
Phenomena - Chatoyancy.
WARNINGS FOR CARE
Ultrasonic: Usually safe.
Steamer: Risky to use.
Heat: Poor; rapid heat may cause fracturing
or breakage.
Chemicals that
harm: Hydrofluoric acid,
ammonium fluoride.
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Crystal Structure

Crystal system: Hexagonal (trigonal), fibrous
aggregate.
MAJOR SOURCES
Sri Lanka, India. South Africa |
Birthstones |