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Current Bid: $500

Appraised Value: $2,930

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Description

bright polish finish. The featured tanzanite is set within a diamond bezel supported by diamond set three-way split shoulders, completed by a two and one-half millimeter wide band. Trademark is Orianne. Identified with markings of "14K". Condition is new, good workmanship.

Containing:

One prong set square cushion mixed cut natural tanzanite, measuring 7.90 x 7.80 x 4.50mm, approximate weight of 2.23ct., clarity is eye clean, type I, dark, very slightly grayish, violetish blue color, (GIA vB 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. 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.

Seventy-Six prong set round brilliant cut diamonds, measuring 1.10 - 1.00 x 0.63mm (depth est.) approximate total weight of 76 Stones = 0.32ct. Graded in the setting.

Clarity SI-2 to I-2

Color G - I

Total Weight of Colored Stones 2.23 ct.

Total Weight of Diamonds 0.32 ct.

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