Featured in this lot is this natural tanzanite, VS2 diamond and 18k white gold ring with AIG paperwork. The ring features a electronically tested 18k white gold split shoulder and whorl lattice ladies cast ring with a 'Orianne' hallmark and a bright finish. The center stone is a brilliant prong set rectangular cushion mixed cut natural tanzanite with measurements of 12.90mm x 11.50mm x 7.80mm and shows eye clean clarity with type I medium dark moderately strong cioletish blue coloration. This stone is GIA vB 6/4) with a good cut grade and transmits light with no distortion and transparency; there is a Colored Stone Grading Report and a total weight of 10.39 carats. The center stone, split pave shoulders, and brilliant whorl lattice are profusely decoration with a total of 112 channel and round brilliant diamonds showing clarity of VS2 - SI2 and a color gradient of G - I, annd shows a total weight of 1.42 carats. Tanzanite is a very rare precious gemstone that is only found in the Usumburu Mountains that border the Umba Valley of northern Tanzania. It was originally discovered in 1967 by Tiffany & Company, who named the stone Tanzanite. This example is unique due to its exceptional pleochroism (an optical phenomenon in which a stone has different colors when observed at different angles). The piece comes complete with AIG(American International Gemologists, a GIA certified lab AIG Appraisal Number#: 000716077074) report and appraisal confirming the above info and giving a total value of $31,190.00. AIG (American International Gemologists, a GIA certified lab AIG Colored Stone grading report stone ID: 16079032. The ring size is US 7.