(K49E92) One electronically tested 18KT white gold cast alexandrite & diamond ring. The featured alexandrite is set within a diamond bezel, supported by diamond ribbon shoulders, completed by a two millimeter wide band. Bright polish finish. Trademark is HANA. Identified with markings of "18K". Condition is new, good workmanship. Containing: One prong set pear modified mixed cut natural alexandrite, measuring 9.53 x 5.83 x 3.12mm, exact weight 1.29ct., type II Clarity is eye clean, medium dark, very slightly grayish, yellow-green color, (GIA YG 6/3) to medium dark, very slightly grayish, orangy brown, (GIA oBr 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 No. 2215746551. 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. Twenty-four prong set round brilliant cut diamonds, measuring 1.80 - 1.80 x 1.08mm (depth est.) approximate total weight of 24 Stones = 0.54ctw. The clarity & color grade reflect the overall average for the group. Graded in the setting. Clarity SI1 to I1 Color E - G GENUINE NATURAL ALEXANDRITE G.I.A. CERTIFIED Total Weight of Colored Stones 1.29ct Total Weight of Diamonds 0.54ctw Total Weight of Ring 3.60 gm