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Wednesday, March 9, 2016
Boulder Opal stone from Australia - a type of gemstone that combines a host rock, usually ironstone or sandstone, and a precious opal.
As the rock is forming, a silica compound containing water penetrates the rock, and deposits opal in the cracks. Amazing.
Related Posts :
Materials, Science
1 comment:
Anonymous
April 25, 2023 at 4:56 PM
almost alien and off worldly, beautiful
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almost alien and off worldly, beautiful
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