Polished Rare Blue Dumortierite Bowl With Golden Biotite Mica x 1 From Madagascar Chatoyant Very similar to Brandberg Quartz

Very similar to Brandberg Quartz

up to 60 cm thick and extending 15 meters below the surface

This material recently hit the market again but prior to this was absent for the better part of 15 years

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Size = 70 - 95 mm

Polished Rare Blue Dumortierite Bowl With Golden Biotite Mica x 1 From Madagascar Chatoyant Very similar to Brandberg QuartzPRODUCT INFORMATION General Description Dumortierite is a fibrous variably coloured Aluminium Boro Silicate mineral, AlBO(SiO)O. Dumortierite crystallizes in the orthorhombic system typically forming fibrous aggregates of slender prismatic crystals. The crystals are vitreous and vary in colour from brown, blue, and green to more rare violet and pink. Madagascar yields very small deposits of this material which then gets beautifully polished . The