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

Rhyolite, 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

Rhyolite is a banded or spotted igneous, volcanic rock with silica crystal inclusions. The composition of Rhyolite is primarily igneous quartz and alkaline feldspars. It is usually pink or gray in color with grains so small that they are difficult to observe without a hand lens.  It has a green-black-brown background with more similarities with a Granite than a Jasper or a Chalcedony.

In the 1860’s the German geologist Ferdinand von Richthofen coined the name Rhyolite after finding it in his explorations of the Rocky Mountains. Principal deposits are in Australia and additional ones are found in China, Germany, Brazil, Iceland, India, Ireland, New Zealand and the USA.  

Hardness 7

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

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