One electronically tested 18KT white gold ladies cast tanzanite and diamond ring with a bright polish finish. The featured tanzanite is set within intertwining diamond ribbons forming a stylized heart design supported by diamond set split shoulders, completed by a grooved two and one-half millimeter wide band. Identified with markings of "18K". Condition is new, good workmanship. Containing: One prong set pear mixed cut natural tanzanite, measuring 9.85 x 9.82 x 5.15mm, approximate weight of 3.44ct., clarity is eye clean, type I, medium dark, very slightly grayish, violetish blue color, (GIA vB 6/3), cut is good. Transmitting light with no distortion, transparent. 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. Sixty-Three prong set round brilliant cut diamonds, measuring 1.60 - 1.50 x 0.93mm (depth est.) approximate total weight of 63 Stones = 0.88ct. Graded in the setting. Clarity: I-2 to I-3. Color: H - J. Total Weight of Colored Stones 3.44ct. Total Weight of Diamonds 0.88ct. Total Weight of Ring 6.76gm. AIG Appraised at $10,580.00.