Synthetic Blue Sapphire Gems, Synthetic Lab Created Ruby Gems, Synthetic Alexandrite, Synthetic White Sapphire, Synthetic Corundum Gemstones China Wholesale and Suppliers:A: Corundum is an aluminum oxide that commonly forms hexagonal barrel-shaped prisms that taper at both ends or as thin tabular hexagonal plates. It has a hardness of 9 on the Mohs scale, making it one of the most durable commercial gemstones. It has no dominant cleavage and fractures in a conchoidal manner. A high density of ~4.0 g/cm3 (most silicate minerals are ~2.6 g/cm3) results in corundum occurring in secondary placer deposits and recoverable by panning methods, similar to how you would recover placer gold.
Corundum comes in all colours of the rainbow but is most commonly found as opaque crystals with dull colours. Red corundum is called ruby, blue corundum is called sapphire, and all other colours are called fancy sapphires. Some varieties of corundum will fluoresce under short wave and long wave UV light if there is enough chromium in the crystal structure but little iron, which tends to quench any emitted energy. Physical Properties of Corundum Mohs Hardness: 9 Specific Gravity: 3.90 to 4.05 Cleavage Quality:None Fracture: Uneven,Conchoidal Optical Properties of Corundum Refractive Index: 1.758 to 1.780 Optical Character: Uniaxial/- Birefringence 0.007 to 0.010 Pleochroism Dichroism: blue - violet-blue and greenish-blue; green - yellowish-green; yellow - pale yellow; purple - violet; orange, yellowish-red - deep crimson. Dispersion:0.018 Usually, There're 3 kinds of popular Corundum Stones for Jewelry use, one is Synthetic Lab Blue Sapphire, Synthetic Red Ruby, and Synthetic Lab Alexandria Gems,
At Fu Rong Gems, you can Buy High quality Corundum Gemstones Synthetic Blue Sapphire Gemstones, Synthetic Red Ruby, and Synthetic Lab Alexandria Gems With Quality Grades A to Top Grade Quality AAAAA at Wholesale Direct Factory prices from the Real China Professional Manufacturers and Suppliers. Here're the popular colors & shapes of Corundum Gemstones:
Color Chart of Synthetic Corundum Gemstones: Contact us to get a Free Quote for your Ideal High Quality of Loose Corundum Synthetic Gemstones from China Wuzhou Suppliers and Manufacturer.
Free Quote: info@frgems.com Gemstones Catalogue:   Please choose the HD 1080p Quality to watch the Video clearly. Or Click 'Watch on Youtube' for Full-Screen watching. Popular Synthetic Gemstones you May be interested:
Synthetic Corundum Gemstones Wholesale at factory direct pricing from China Suppliers and Manufacturers. |
Gemstones Color Charts
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