Gemmology
English | Български
Where am I? > Home > Classification > Obsidian


Quick navigation selector

Obsidian

A rock; a mixture of cryptocrystalline grains of silica minerals in a glass-like suspension.

See:
Obsidian — specimen 0617
Obsidian — specimen 0617, photo © NMNHS

Material from ‘Repository’

1 specimen: 0617 — 32.97 ct, Mexico.


Gallery view