5-20cm Wholesale Large Natural Raw Obsidian Stone Rough for Jewelry Making

• Model NO.: 06
• Name: Black Obsidian
• Material: Crystal Obsidian
• Size: Customized Sizes
• Technique: Crushed
• Transport Package: Safe Package
• Trademark: RT
• Origin: Hebei

Product Description

Product Description

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	Obsidian
Size	7-9mm
MOQ	1kg
Production Cycle	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	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	1.By Express:EMS/DHL/TNT/FEDEX/UPS 2.By air,By sea
Delivery	Air shipping:5-15days Sea shipping:Arond one month