Description: This listing is for one 4-6" Snowflake Obsidian specimen weighing between 1-2 lbs. similar to the photos pictured from Modoc. County, California. These specimens are quite showy with a nice contrast between the white Cristobalite and black obsidian and would look great displayed on your mantle or bookcase. Link to Our Other Obsidian Specimens SNOWFLAKE OBSIDIAN PROPERTIES: Snowflake Obsidian is a black variety of obsidian with white or grey "snowflakes" which are composed of radiating needles of Cristobalite, a type of quartz. Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock. Obsidian is produced when felsic lava extruded from a volcano cools rapidly with minimal crystal growth. It is commonly found within the margins of rhyolitic lava flows known as obsidian flows, where the chemical composition (high silica content) causes a high viscosity, which, upon rapid cooling, results in a natural glass forming from the lava. The inhibition of atomic diffusion through this highly viscous lava explains the lack of crystal growth. Obsidian is hard, brittle, and amorphous; it therefore fractures with sharp edges. In the past, it was used to manufacture cutting and piercing tools, and it has been used experimentally as surgical scalpel blades. OBSIDIAN PROPERTIES: Category: Volcanic glass Color: Deep black or blackish green Fracture: Conchoidal Mohs scale hardness: 5–6 Luster: Vitreous Specific gravity: 2.4 Optical properties: Translucent Other characteristics: Texture: Smooth; glassy Courtesy of Wikipedia Track Page Views With Auctiva's Counter
Price: 19.82 USD
Location: Yucca Valley, California
End Time: 2024-02-21T22:29:02.000Z
Shipping Cost: 7.85 USD
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Item Specifics
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money back or replacement (buyer's choice)
Return policy details:
Shape: Natural
Country/Region of Manufacture: United States
