One electronically tested platinum ladies cast tanzanite & diamond ring. Condition is new, good workmanship. The featured tanzanite is set within a diamond bezel, supported by an elaborate lattice under gallery and diamond set split shoulders, completed by a three millimeter wide band. Bright polish finish. Trademark is Orianne. Identified with markings of "PT950". Containing: One prong set oval modified brilliant cut natural tanzanite, measuring 16.01 x 12.04 x 9.47mm, exact weight 13.17ct., clarity is eye clean, type I, medium, very slightly grayish, violet color, (GIA V 5/3), cut is good. Transmitting light with no distortion, transparent. GIA Gemological Report attached. Graded loose prior to setting in the GIA Laboratory, Report #2175582530. 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. Fifty-two prong set round brilliant cut diamonds, measuring 2.40 - 1.80 x 1.26mm (depth est.) exact total weight 52 Stones = 1.53ctw. Graded in the setting. Clarity SI1 to SI3 Color F - H Total Weight of Colored Stones 13.17ct. Total Weight of Diamonds 1.53ctw. Total Weight of Ring 18.80 gm Orianne |Platinum| Tanzanite RN024615