Gemmology
English | Български
Where am I? > Home > Repository > Rainbow obsidian


Gallery view selector

Colour selector
Simple colour schemeredorangey redreddish orangeorangeorangey yellowyellowgreenish yellowyellowish greenslightly yellowish greengreenvery slightly bluish greenbluish greenvery strongly bluish greengreen-blue or blue-greenvery strongly greenish bluevery slightly greenish bluebluevioletish bluebluish violetvioletbluish purplepurplereddish purplestrongly purplish redslightly purplish redcolourlessgreyblack
Rainbow obsidian — specimen 0617, photo © NMNHS
Rainbow obsidian — specimen 0617, photo © NMNHS

Rainbow obsidianspecimen 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’


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