Current Bid: $1,500
Appraised Value: $10,145
One electronically tested platinum ladies cast alexandrite & diamond ring. Condition is new, excellent workmanship. The featured alexandrite is set within a diamond floret, supported by a ribbed under gallery, completed by a two and one half millimeter wide band. Bright polish finish. Trademark is Orianne. Identified with markings of "PT 950". Containing:
One prong set oval mixed cut natural alexandrite, measuring 7.77 x 5.78 x 3.43mm, exact weight 1.20ct., type II Clarity is eye clean, medium dark, very slightly grayish, yellow-green color, (GIA YG 6/3) to medium dark, very slightly grayish, yellow-brown, (GIA YBr 6/3), cut is good. Transmitting light with no distortion, transparent. GIA Gemological Report attached. Graded loose prior to setting in the GIA Laboratory, Report #2195297071.
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 & baguette cut diamonds exact total weight 16 Stones = 0.48ctw. The clarity grade reflects the overall average for the group. Graded in the setting.
Clarity SI2 to I1
Color G - I
Total Weight of Colored Stones 1.20ct.
Total Weight of Diamonds 0.48ctw.
Total Weight of Ring 5.10 gm