One electronically tested 14KT white gold ladies cast & assembled tanzanite and diamond pendant/enhancer with chain. The pendant/enhancer features a tanzanite set within an elaborate diamond lattice gallery, completed by a diamond set snap-locking bail. The pendant/enhancer is supported by an eighteen inch length 14KT white gold designer style chain, terminating in a lobster claw clasp. Bright polish finish with milgrain detailing. Trademark is Orianne. Identified with markings of "14K". Condition is new, good workmanship. One prong set triangle mixed cut natural tanzanite, measuring 14.60 x 14.50 x 8.65mm, 12% bulge factor, approximate weight of 12.82ct., clarity is eye clean, type I, dark, very slightly grayish, blue color, (GIA B 7/3), cut is good. Transmitting light with nodistortion, transparent. Colored Stone Grading Report attached. 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. Two Hundred Seventy-Four bead and channel set round brilliant cut diamonds (depth est.) approximate total weight of 274 Stones = 2.31ct. Graded in the setting. Clarity I-1 to I-2 Color G - I Orianne 14K Tanzanite, Diamond 40590