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Star Sapphire

Black Star & Blue Star Sapphire Gemstone Information.
Information * Loose gemstones * Jewelry links

The three crossbars of star sapphire represent faith, hope, and charity. It was once used to ward off bad omens and the evil eye. Star Sapphire was considered so potent that its influence would remain with the first owner, even after it was passed on into other hands.
 

ENHANCEMENT CODE N
Click to view AGTA code.

PROPERTIES
Refractive Index 1.762-1.770
Hardness = 9 (Moh's Scale)
Specific Gravity =4.0
Species - Corundum
Optic Character - Double Refraction.
Phenomena - Asterism


WARNINGS FOR CARE
Ultrasonic: Risky
Steamer: Risky
Heat: Poor; may alter color or star
Chemicals that harm: Boron

 

Crystal Structure
Black star crystal image.
Crystal system: Hexagonal (trigonal), dipyramidal, barrel and tabloid shape.

MAJOR SOURCES
Sri Lanka, Thailand, India, Australia, Kampuchea
Birthstones
 January  Garnet
February Amethyst
March Aquamarine
April Diamond
May Emerald
June Pearl/Alexandrite
July Ruby
August Peridot
September Sapphire
October Opal/Tourmaline
November Topaz or Citrine
December Blue Topaz or Zircon
Common Cut Examples.
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