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 an eighteen inch length platinum wheat chain, terminating in a lobster claw clasp. Bright polish finish. Trademark is Orianne. Identified with markings of "PT950". Containing: One prong set cushion modified brilliant cut natural tanzanite, measuring 13.91 x 9.39 x 8.50mm, exact weight 9.20ct., clarity is eye clean, type I, dark, moderately strong, violet color, (GIA V 7/4), cut is good. Transmitting light with no distortion, transparent. GIA Gemological Report attached. Graded loose prior to setting in the GIA Laboratory, Report # 2161949462. 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. Thirty-five prong sct round brilliant cut diamonds approximate total weight of 35 Stones = 0.39ctw. Graded in the setting. Clarity SI1 to I1 Color F - H Total Weight of Colored Stones 9.20ct. Total Weight of Diamonds 0.39ctw. Total Weight of Pendant With Chain 13.44 gm Size: 18