18 Pieces Dumortierite Quartz Bracelets

Crystals Wholesale USA Verified independent store

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Material: Dumortierite Quartz.Color: as the picture.Quality: as the picture. Note: We sell our dumortierite quartz bracelet in lots that are 18pcs(7pcs is 6mm and 11pcs is 7mm), yo u will get the same of stones as in the photo and video. Dumortierite is a fibrous variably colored aluminium boro-silicate mineral, Al7BO3(SiO4)3O3. It crystallizes in the orthorhombic system typically forming fibrous aggregates of slender prismatic crystals. The crystals are vitreous and vary in color from brown, blue, and green to more rare violet and pink. Substitution of iron and other tri-valent elements for aluminium results in the color variations. It has a Mohs hardness of 7 and a specific gravity of 3.3 to 3.4. Crystals show pleochroism from red to blue to violet. Dumortierite quartz is blue colored quartz containing abundant dumortierite inclusions. It is used in the manufacture of high grade porcelain. It is sometimes mistaken for sodalite and has been used as imitation lapis lazuli. Sources of dumortierite include Austria, Brazil, Canada, France, Italy, Madagascar, Namibia, Nevada, Norway, Peru, Poland, Russia, Indonesia, and Sri Lanka. Show more