0.99ct Alexandrite and 0.19ctw Diamond Platinum Ring (GIA CERTIFIED)

Auction #2075 | Item #34

Current Bid: $800

Appraised Value: $7,845

This lot is sold or expired.

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One electronically tested platinum ladies cast alexandrite & diamond ring. Condition is new, good workmanship. The featured alexandrite is set within a diamond bezel, supported by an elaborate lattice under gallery, completed by a two millimeter wide band. Bright polish finish. Trademark is Orianne. Identified with markings of "PT950". Containing:

One prong set octagonal modified mixed cut natural alexandrite, measuring 6.96 x 3.88 x 3.45mm, exact weight 0.99ct., type II Clarity is slightly included, medium dark, very slightly brownish, greenish yellow color, (GIA gY 6/3) to medium dark, very slightly grayish, yellowish brown, (GIA yBr 6/3), cut is good. Transmitting light with a minimum of distortion, transparent. Naturally occurring internal & external characteristics are present. GIA Gemological Report attached. Graded loose prior to setting in the GIA Laboratory, Report #5201365488.

This stone exhibits a change of color when viewed under daylight or fluorescent vs incandescent light.

Alexandrite was discovered in the 1830's near the Tokovaya River in the Ural Mountains of Siberian Russia. It later became the national gemstone of Russia. The name "alexandrite" became official in 1842.

Alexandrite is a variety of chrysoberyl. It contains both beryllium and chromium. It is the chromium that accounts for the spectacular color change. The color change is the primary qualification for a chrysoberyl to be considered alexandrite. Alexandrite is strongly trichroic. Its color change results in a near-equal transmission of the blue-green and red portions of the spectrum, coupled with strong absorption in the yellow. Today Alexandrite is found in Brazil, India, Madagascar, Myanmar, Russia, Sri Lanka, Tanzania and Zimbabwe.

Sixteen prong set round brilliant cut diamonds exact total weight 16 Stones = 0.19ctw. Graded in the setting.

Clarity VS2 to SI2

Color G - H

Total Weight of Colored Stones 0.99ct.

Total Weight of Diamonds 0.19ctw.

Total Weight of Ring 4.20 gm


SKU: 1145029