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OBSIDIAN - Krafla, Iceland

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Home > MINERALS > UNUSUAL ROCKS AND MINERALS - WEIRD AND WONDERFUL !

 
OBSIDIAN

Krafla, Sudur-Thingeyjarsysla, Iceland​​​​​​​
 
Obsidian is a natural volcanic glass, formed when lava from a volcano cools extremely quickly leaving no time for crystals to grow. 

The lava that produces obsidian is usually sticky and  viscous, resulting in explosive eruptions. 
 
Caution: Just like man-made glass, broken pieces of obsidian have very sharp edges.

Click on a picture for a larger image

Size:  6 x 5 x 4 centimetres
Weight:  115 grams

PRICE: £12.00
OBSIDIAN  -  Krafla, Iceland
OBSIDIAN  -  Krafla, Iceland OBSIDIAN  -  Krafla, Iceland OBSIDIAN  -  Krafla, Iceland OBSIDIAN  -  Krafla, Iceland