4.5 ct Vivid Blue Tanzanite With Excellent Luster And Fine Cutting Gemst

Item Information

Dimensions (mm) 12.23 x 7.59 x 5.42mm
Weight (carats) 4.5 carats
Colors
Certified Gemstone
Clarity (IF)

Description

Tanzanite is the blue and violet variety of the mineral zoisite, caused by small amounts of vanadium. Tanzanite belongs to the epidote mineral group. Tanzanite is only found in Tanzania, in a very small mining area near the Mererani Hills. Wikipedia
Color: Blue, Purple
Luster: Vitreous
Associated month: December
Crystal system: Orthorhombic crystal system
Chemical formula: Ca₂Al₃(SiO₄)₃(OH)
Hardness (Mohs hardness scale): 6 – 6.5
Mineral class: Zoisite

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$1,297 toolman
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Audit Information

This auction has been audited by a Gemstone Sheriff and they have found the following: View Report
Description Accurate
Pictures Accurate

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Last updated 22nd Mar
Requested 16th Mar

Pricing & Details

Bid Increment $1
Starting Bid $1
Auction ID 1437000
Watchers 11 watching
Viewed 376 times
Starts 9th Apr 2021 10:45pm PDT
Ends 10th Apr 2021 10:42pm PDT

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