One electronically tested 14KT white gold ladies cast & assembled tanzanite and diamond pendant with chain. The pendant features a tanzanite set within a diamond floret, completed by a white gold bail. The pendant is supported by a twenty inch length 14KT white gold patterned cable chain, terminating in a lobster claw clasp. Bright polish finish Condition is new, good workmanship. Containing: One prong set pear modified brilliant cut natural tanzanite, measuring 20.34 x 14.21 x 9.38mm, exact weight 18.21ct., 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. GIA Gemological Report attached. Graded loose prior to setting in the GIA Laboratory, Report #2175668644Tanzanite 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. Nine prong set round brilliant cut diamonds, measuring 2.90 - 2.90 x 1.74mm (depth est.) approximate total weight of 9 Stones = 0.84ct. Graded in the setting. Clarity I-1 to I-2. Color: G - H Eleven prong set round brilliant cut diamonds, measuring 2.50 - 2.50 x 1.50mm (depth est.) approximate total weight of 11 Stones = 0.66ct. Graded in the setting. Clarity I-1 to I-2. Color: G - I. Total Weight of Colored Stones 18.21ct.. Total Weight of Diamonds 1.50ct.. Total Weight of Pendant With Chain 13.34gm. AIG Appraised at $45,920.00.