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- |_ Gemstones, Genuine
- |_ Alexandrite
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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.
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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
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Crystal Structure
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 |
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