170.0 CTS DUMORITIERITE SLAB FROM TURKEY [F6168]

Item Information

Dimensions (mm) 45 x 35 x 7mm
Weight (carats) 170 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

16h 31m 43s

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Pricing & Details

Bid Increment $1.00
Starting Bid $32.00
Auction ID 527229
Watchers 1 watching
Viewed 544 times
Starts 16th Dec 2017 4:40pm PST
Ends 17th Dec 2017 4:36pm PST

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