Obsidian, Black, Natural, Smooth Round in sizes 4mm, 6mm, 8mm & 10mm. Priced Per Strand

Obsidian, Black, Natural, Smooth Round. This price is for one strand 15 to 16 inches long.  

4mm strands have 90 to 95 pieces.

6mm strands have 60 to 65 pieces.

8mm strands have 43 to 48 pieces. 

10mm strands have 33 to 38 pieces. 

Obsidian is a naturally occurring volcanic glass formed in swiftly cooling lava that has a high silica content. It is not considered a true mineral, as it does not have a consistent chemical content and it does not form crystals. Obsidian is commonly found within the margins of the lava flows known as obsidian flows. It has a glassy texture and a glass like luster. The color in Obsidian varies, depending on impurities in the parent lava formation.  The various shades of Obsidian include black, rainbow, snowflake, gold, and mahogany. Obsidian is hard and brittle and was commonly used for tools.

Obsidian is found in locations which have undergone volcanic eruptions. It can be found in many countries around the world, like Argentina, Australia, Canada, Chile, China, Greece, Guatemala, Iceland, Italy, Japan, New Zealand, Scotland, Turkey. In the United States it is not usually found east of the Mississippi River, as there is no geologically recent volcanic activity there. In the western US it is found at many locations in Arizona, California, Idaho, Nevada, New Mexico, Oregon, Washington, and Wyoming. Most obsidian used in the jewelry trade is produced in the United States.

Hardness 5-6

This is a natural stone that has had no treatment other than cutting, drilling, and polishing.

The source of these beads is China and they are cut, drilled and polished in China.