Hole .5-1mmObsidian (ub-SIH-dee-in) is a natural glass that forms from volcanic activity.The gemstone is made of the same minerals as granite, but cools so quickly when exposed to air that the minerals do not have time to crystallize.Some inclusions can be bubbles or crystals...
- Hole .5-1mm
- Obsidian (ub-SIH-dee-in) is a natural glass that forms from volcanic activity.
- The gemstone is made of the same minerals as granite, but cools so quickly when exposed to air that the minerals do not have time to crystallize.
- Some inclusions can be bubbles or crystals, creating a random pattern such as snowflake.
- It may first have been discovered in Ethiopia by a man named Obsius, from whom its name is derived.
- Obsidian has been used for tool making since at least 21,000 B.C. and used in jewelry for many centuries.
- American Indians used it for arrowheads, and the Aztecs used a great deal of obsidian for items such as sacrificial knives and mirrors.
- Today, obsidian is used for dating; the stone weathers slowly at a uniform rate, and the thickness of the weathered layer is measured microscopically and gauged against known standards to give a date in years.
- Major sources include Iceland, Italy, the U.S.A. (especially Wyoming and Hawaii), Japan and Java.
- aka Flowering Obsidian
- Usually black or dark gray with light gray radiating patches, this gemstone is believed to assist with clarity and logic.
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Manufacturer: FMG
MPN: 15622
SKU: 21884032
