28.43ct DARK Tanzanite and 1.47ctw Diamond Platinum Pendant/Necklace (GIA CERTIFIED)

Auction #1890 | Item #24

Current Bid: $10,000

Appraised Value: $75,550

This lot is sold or expired.

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One electronically tested platinum ladies cast & assembled tanzanite and diamond pendant with chain. Condition is new, good workmanship. The pendant features a tanzanite set within a diamond bezel with a lattice under gallery, completed by a diamond set bail. The pendant is supported by a twenty inch length platinum rope chain, terminating in a lobster claw clasp. Bright polish finish. Trademark is Orianne. Identified with markings of "PT950". Containing:


One prong set round modified brilliant cut natural tanzanite, measuring 18.18 -18.06 x 12.68 mm, exact weight 28.43ct., clarity is eye clean, type I, dark, very slightly grayish, violetish blue color, (GIA vB 7/3), cut is good. Transmitting light with no distortion, transparent. GIA Gemological Report attached. Graded loose prior to setting in the GIA Laboratory, Report # 2145713426.


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.


Eighty-five prong set round brilliant cut diamonds appluAiinate total weight of 85 Stones = 1.47ct. Graded in the setting. 

Clarity SI-1 to SI-2

Color F - H


Total Weight of Colored Stones 28.43ct.

Total Weight of Diamonds 1.47ct.

Total Weight of Pendant With Chain 24.92 gm

SKU: 1121672