Crystal Quartz Properties Chemical Composition | It is Silicon Dioxide the chemical formula is SiO2. | Colours | Colourless, White, Gray, Pink, Purple, Brown and Black. | Streak | White | Varieties | Amethyst, Citrine, Rock crystal, Smoky quartz, Rose quartz, Chalcedony, Agate, Chrysoprase, Sardonyx, Onyx, Carnelian, Flint, Jasper and Bloodstone. | Specific Gravity | 2.65 | Refractive Index | 1.54-1.55 | Luster | Glassy to vitreous | Hardness | 7 Mohs. | Solid State | Transparent to translucent | Pleochroism | None | Fractures | Conchoidal. | Bi-refringence | 0.009 | Crystal System | Trigonal Crystal System. | Cleavage | None | Enhancement | Not enhanced | Source | World side occurrence. Brazil, USA, UK, Scotland, Russia, Mexico, Germany, Montana, Switzerland and Madagascar. | Precautions | Only general gemstone precautions are 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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