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1.70ct Cobalt Coated Tanzanite and Diamond Ring (0.38ctw Diamonds)

Auction #1764 | Item #46

Current Bid: $200

Appraised Value: $2,580

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Wednesday December 12, 2:00 PM Pacific Standard Time

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One electronically tested 14KT white gold ladies cast tanzanite and diamond ring with a bright polish finish. The featured tanzanite is set within a diamond bezel supported by diamond set shoulders, completed by a one and one-half millimeter wide band. Condition is new, good workmanship.


One prong set square cushion mixed cut natural tanzanite, measuring 6.80 x 6.75 x 4.70mm, approximate weight of 1.70ct., clarity is eye clean, type I, dark, very slightly grayish, bluish violet color, (GIA bV 7/3), cut is good.


Natural Tanzanite, color enhanced due to cobalt coating. The presence of the coating prevents determining the stone's actual depth of color. Transmitting light with no distortion, transparent. Grading in the setting. The cobalt coated Tanzanite has a low tolerance to ultrasonic cleaning, and should not be cleaned using this method.


Thirty prong set round brilliant cut diamonds, measuring 1.60 - 1.40 x 0.90mm (depth est.) approximate total weight of 30 Stones = 0.38ct. Graded in the setting.


Clarity    SI-1 to I-1
Color      G - I


SKU: 115569