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16.92 ctw Fancy Mixed Tanzanite Parcel

Currency:USD Category:Jewelry / Loose Diamonds & Gemstones Start Price:1.00 USD Estimated At:1,250.00 - 1,630.00 USD
16.92 ctw Fancy Mixed Tanzanite Parcel
High End Watches, Exotic Antiques, Cars, Gold, Vintage & Collectible Coins, and Jewelry.
Sixty mixed cut natural tanzanites exact total weight 16.92ct., clarity is eye clean, type I, medium dark, very slightly grayish, bluish violet color, (GIA bV 6/3), cut is good. Transmitting light with no distortion, transparent. Color grade is an average for the group. Graded in the setting. Tanzanite is a very rare gemstone that is only found in the country of Tanzania. Originally discovered in 1967. Tiffany & Company, named the stone Tanzanite. It is found in the Usumburu Mountains that border the Umba Valley of northern Tanzania. Tanzanite occurs in gray, brown, violet, blue, reddish-purple, & green. The gem is interesting because of its exceptional pleochroism. Rotated in different directions a tanzanite will exhibit multiple changes of color. Tanzanite has a low tolerance to ultrasonic cleaning, and should not be cleaned using this method. Westfield Appraised at $1,630.00.