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Rainbow obsidian — specimen 0617, photo © NMNHS
Rainbow obsidian — specimen 0617, photo © NMNHS

Rainbow obsidian — specimen 0617

Origin

Central America
Mexico
Rainbow obsidian — specimen 0617, locality map
Data

Weight: 32.97 ct; size: 30.87 | 27.05 | 4.52 mm; shape: oval; colour: black; clarity: opaque; cut: excellent; treatment: none.
Notes

Clean specimen; excellent cabochon style cut by Nathan Christensen, Lincoln, Nebraska.

More information from ‘Classification’

Rainbow obsidian

A variety of obsidian with multicoloured iridescence caused by inclusions of magnetite nanoparticles.


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The specimens illustrated in this site do not exist in the collections of the National Museum of Natural History, Sofia.