265.0 CTS DUMORITIERITE SLAB FROM TURKEY [F6167]

Item Information

Dimensions (mm) 52 x 44 x 10mm
Weight (carats) 265 carats
Colors

DUMORITIERITE SLAB
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 527227
Watchers 1 watching
Viewed 781 times
Starts 2nd Sep 2015 5:35pm PDT

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