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Obsidian is a natural glass. It is formed from volcanic lava that cooled too quickly for significant crystalization to occur.Hence it is amorphous, with no clevage; fracture is conchoidal.
Obsidian is usally black but brown, grey and more rarely red, blue and green material is found.
The color may be uniform, striped or spotted. Some inclusions give obsidian a metallic sheen, while internal bubbles or crystals (called crystallites) produce a snowflake effect or iridescence seen as flashes of color.
Crystal Structure: Amorphous
Composition: Mainly Silicon Dioxide
Hardness: 5
Grades Available: AAA, AA, A, AB, C,
Size: Large, Medium, Small, Prepared for tumbling.
Material
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Obsidian
|
Size
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7-9mm
|
MOQ
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1kg
|
Production Cycle
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1.For stockorder,we ship within 3 days when we get your payment 2.For OEM/ODM order,lead time is 5-20days according to the quantity. |
Payment
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1.L/c;T/T;PayPal;West Union;Money Gram etc. 2.Sample order:100% payment before shipment 3.Bulk order: 30%deposit balance before shipment |
Shipping Way
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1.By Express:EMS/DHL/TNT/FEDEX/UPS 2.By air,By sea |
Delivery
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Air shipping:5-15days Sea shipping:Arond one month |
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