ENHANCEMENT CODE H
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AGTA code.
PROPERTIES
Refractive
Index 1.762-1.77
Hardness = 9 (Moh's
Scale)
Specific Gravity =4.0
Species - Corundum
Optic Character - Double Refraction.
Phenomena - Chatoyancy (Very Rare)
WARNINGS FOR CARE
Ultrasonic: Usually Safe
Steamer: Usually Safe
Heat: Poor; may sometimes Improve color, but may cause loss of color
Chemicals that
harm: Borax
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Sapphire crystal
growth.
Image Courtesy
Chatham®.
Crystal Structure
Crystal system: Hexagonal (trigonal), dipyramidal, barrel and tabloid shape. |
Birthstones |