Spinel Properties Chemical Composition | It is Magnesium Aluminum Oxide having the chemical formula MgAl2O4. | Colours | Red, blue, green, orange, mauve, violet, yellow, purple, brown and black. | Streak | White or grayish white. | Refractive Index | 1.71 - 1.76 (approx) | Specific Gravity | 3.58-3.73 | Luster | Vitreous. | Solid State | Transparent to translucent and sometimes nearly opaque. | Crystal System | Isometric – Cubic Hexagonal crystal system. | Hardness | 8 Mohs. | Clevage | None | Fractures | Uneven to conchoidal. | Bi-refringence | None | Luminescence | Sometimes fluorescent. | Tenacity | Brittle | Synthetic Availability | Synthetic stones are available. | Enhancement | Not enhanced. | Source | Myanmar (Burma), Afghanistan, Madagascar, Pakistan, Australia, Italy, Sri Lanka (Ceylon), Brazil, Tanzania, Sweden, Turkey, Russia and United States. | Precautions | Only general gemstone precautions required. |
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Belly Button Piercing
The Egyptians, the Indians and many other cultures pierced this humble button to show the significance of the person sporting a pierced navel - Royalty, Warriors, exceptional Beauty. |
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