One electronically tested 18KT white gold ladies cast & assembled tanzanite and diamond bracelet with a bright polish finish. Six and three-quarter inch length bracelet features a tanzanite set within an elaborate diamond lattice gallery supported by a flexible diamond set ribbon transitioning into matching white gold links, terminating in a concealed clasp with twin safeties. Identified with markings of "18K 750". Condition is new, good workmanship. One prong set pear brilliant cut natural tanzanite, measuring 17.00 x 12.15 x 6.20mm, approximate weight of 8.59ct., 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. 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 Twenty prong set round brilliant and baguette cut diamonds (depth est.) approximate total weight of 220 Stones = 4.45ct. The color grade reflects the entire range of color for this group. Graded in the setting. Clarity VS-2 to I-1 Color G - I