Lapis 4mm Round 8-Inch Prism Dumortierite is an aluminum borosilicate

Dumortierite is an aluminum borosilicate mineral that varies in color from blue

including to ward off illness and the Plague

In this strand

It is a variety of the mineral corundum

but rather a speckled teal Jasper found in Africa and often treated to simulate the beautiful blue to green associated with true Turquoise

Lapis 4mm Round 8-Inch Prism Dumortierite is an aluminum borosilicateLapis, or Lapis Lazuli, is a deep blue metamorphic rock used as a semi precious stone that has been prized since antiquity for its intense color. During the Renaissance, Lapis was ground and processed to make the pigment ultramarine for use in frescoes and oil painting. It is not a mineral, but a combination of minerals, including lazurite, calcite, sodalite and pyrite. Note: Our 8 inch line of Lapis has had its color enhanced by dyeing.