ENHANCEMENT CODE N
Click to view AGTA
code.
PROPERTIES
Refractive Index 1.535-1.539
Hardness = 6.5-7 (Moh's
Scale)
Specific Gravity = 2.60
Species - Chalcedony
Optic Character - aggregate
WARNINGS FOR CARE
Ultrasonic: Usually safe
Steamer: Usually safe
Heat: Poor; color change may occur with heat
Chemicals that harm:
Hydrofluoric acid, nitric acid.
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Crystal Structure

Host rock chipped away and partially polished.
Crystal system: Hexagonal fibrous aggregates, micro crystalline quartz
MAJOR SOURCES
Blue - Africa
Lavender - United States
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Birthstones |