Tanzanite 1.60 Ct Natural Tanzanite ! Eye Catching Tanzanite! H.M

Item Information

Dimensions (mm) 9.32 x 7.2 x 4.07mm
Weight (carats) 1.6 carats
Colors
No Treatment

Tanzanite
Tanzanite is the blue and violet variety of the mineral zoisite (a calcium aluminium hydroxyl sorosilicate), caused by small amounts of vanadium.[3] Tanzanite belongs to the epidote mineral group. Tanzanite is only found in Tanzania, in a very small mining area (approximately 7 km (4.3 mi) long and 2 km (1.2 mi) wide)[4] near the Mererani [sw] Hills.[5]

Tanzanite is noted for its remarkably strong trichroism, appearing alternately blue, violet and burgundy depending on crystal orientation.[6] Tanzanite can also appear differently when viewed under different lighting conditions. The blues appear more evident when subjected to fluorescent light and the violet hues can be seen readily when viewed under incandescent illumination. In its rough state tanzanite is colored a reddish brown to clear, and it requires heat treatment to remove the brownish "veil" and bring out the blue violet of the stone.[7]

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Treatment None

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Pricing & Details

Auction ID 1384839
Watchers 1 watching
Viewed 47 times
Starts 7th Jan 2021 3:23am PST

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