Item Information

Dimensions (mm) 57 x 37 x 9mm
Weight (carats) 290 carats

This is a natural untreated slab which is transparent and showing colours of mauve and purple. Mined in Turkey.
We have taken both sides of the stones and the pictures are wet.

Dumortierite is a fibrous variably colored aluminium boro-silicate mineral, . Dumortierite 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 result 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 quartzcontaining abundant dumortierite inclusions

$44.00 USD

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Pricing & Details

Auction ID 527215
Watchers 10 watching
Viewed 2,301 times
Starts 2nd Sep 2015 5:23pm PDT

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Quality Rough Details

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