One electronically tested 14KT white gold ladies cast and assembled tanzanite and diamond ring. Condition is new, good workmanship. The featured tanzanite is set within diamond shoulders, completed by a two millimeter wide band. Bright polish finish with milgrain detailing throughout. Trademark is RT. Identified with markings of "14K". Containing: One prong set round mixed cut natural tanzanite, measuring 7.50 - 7.50 x 5.20 mm, approximate weight of 1.81ct., clarity is eye clean, type I, medium dark, moderately strong, bluish violet color, (G1A bV 6/4), cut is good. Transmitting light with a minimum of distortion, transparent. Naturally occurring internal and external characteristics are present. Graded in the setting. Tanzanite is a very rare gemstone that is only found in the country of Tanzania. Originally discovered in 1967. Tiffany and 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, and 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-eight bead set round brilliant cut diamonds, measuring 1.40 - 1.00 x 0.72mm (depth est.) approximate total weight of 88 Stones = 0.46ctw. Graded in the setting. Clarity I-1 to I-2 Color G - H Total Weight of Colored Stones 1.81ct. Total Weight of Diamonds 0.46ctw. Total Weight of Ring 4.20 gm (23298)