Obsidian Facts

Obsidian Facts

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Obsidian  Properties

Chemical Composition It is Silicon Di Oxide and the chemical formula is SiO2.
Colours Black, Dark Green, Dark Brown. Other rare colours are blue, gray, red and orange.
Streak White.
Varieties Snowflake Obsidian , Sheen Obsidian and Rainbow Obsidian.
Specific Gravity Approximately 2.6
Refractive Index 1.48 -1.50
Luster Vitreous to glassy.
Crystal System Not Applicable. It is amorphous in nature.
Hardness 5 – 5.5 Mohs.
Solid State Opaque to translucent.
Fractures Conchoidal.
Source United States, Hawaii, Japan, Iceland, Java, Hungary, Russia, Ecuador, Italy, Mexico and Scotland.
Enhancement Not enhanced.
Precautions Protect from sharp blows, scratches, harsh chemicals and cosmetics.
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