Glittering Stones >> Semi Precious Stones >> Dumortierite

Semi Precious Stone Dumortierite

Dumortierite a fibrous variably colored aluminium boro silicate mineral described first in 1881 in chaponost. The mineral typically occurs in the high temperature aliuminium rich regional metamorphic rocks. The exiting colors of the gemstone are brown, blue, green to rare violet, pink and still more. The Mohs scale hardness of dumortierite is 8.5 and the specific gravity is 3.3 to 3.4 and the crystals are vitreous.

The occurrence of the mineral can be found in Austria, Canada, France, Italy, Madagascar, Namibia, Nevada, Poland, Sri Lanka and Norway. Dumortierite is the blue colored quartz containing abundant dumortierite inclusions.

Historical Facts of Dumortierite Refractive Index 1.659 - 1.692 Chemical Composition Al6.5 - 7(BO3)(SiO4)3(O, OH)3 Hardness 7 - 8.5 Density 3.3 - 3.4 Crystal Group Orthorhombic Color Red, Blue, Violet, Pink, Brown Ocurrence France, Russia, Magadanskaya, Siberia, Madagascar, Tanzania

Gem Stone Dumortierite Jewelry

Dumortierite Bracelet

Dumortierite Earring

Dumortierite Necklace

Dumortierite Ring