Great South Gems & Minerals

• Mahogany Obsidian Specimens •
(Mexico)

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• Mahogany Obsidian Specimens •
(Mexico)

obsidian - natural volcanic glass - igneous rock

Chocolate brown obsidian specimens. Some with brown and black on the same specimens. From Mexico

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Obsidian is a natural volcanic glass. Mostly found in a plain black glass, but occasionally there is the snowflake obsidian, and those with either a gold-like sheen, or a silver-like sheen. Obsidian is an igneous rock, formed by volcanos. It is a melted silica. Hardness 6-1/2.

Obsidian has been prized for thousands of years by early man for making arrowheads, axes, knives and other useful tools. Today, obsidian is used in making carvings, beads, and semi-precious stones. Obsidian is easily ground and polished and is popular in lapidary work.

See black obsidian specimens.
See gold sheen obsidian specimens.
See gold sheen obsidian eggs.
See mahogany obsidian eggs.
See snowflake obsidian eggs.

For a more complete description of obsidian see en.wikipedia.org/wiki/Obsidian.

Also see "Apache Tears" Natural glass nodules formed through volcanic activity.

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