April 16, 2024
18KT Yellow Gold 5.16 ctw Tanzanite and Diamond Ring Lot 1019
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LOT 1019Seller's Estimate: USD 23,150 - 30,850One electronically tested 18KT yellow gold ladies cast tanzanite and diamond ring with a bright polish finish. Condition is new, good workmanship. The featured tanzanite is supported by diamond set shoulders framed by mirroring diamond set orbits, terminating in a squared eight millimeter wide band. Trademark is SA. Identified with markings of "18K". Containing: One prong set rectangular cushion mixed cut natural tanzanite, measuring 12.20 x 8.45 x 6.00mm, 6% bulge factor, approximate weight of 5.16ct, clarity is eye clean, type I, medium dark, moderately strong, violetish blue color, (GIA vB 6/4), 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. Ten channel
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