Obsidian, Black, Natural, Smooth, Teardrop , One 13x18mm Strand

Obsidian, Black, Natural, Smooth, Teardrop , One 13x18mm Strand

This price is for one strand 15 to 16 inches

13x18mm Smooth Teardrop strands have about 20 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 in China.