Featured in this lot is this 8.30 carat tanzanite and diamond 18kt white gold necklace with AIG and GIA paperwork. The necklace features electronically tested 18kt white gold ladies cast and assembled pendant with a chain and shows new condition and good workmanship with an 'Orianne' hallmark with a '18k' stamp next to it; and completed with an 18" length of 18kt white gold chain finished in a lobster claw clasp. The center stone features an extremely rare prong set pear mixed cut natural tanzanite, and measures 16.00mm x 9.40mm x 8.00mm with clean eye clarity and considered type I with dark moderately strong blue color and transmits light with no distortion, that is transparent and weighs 8.30cats; the stone features a Colored Stone Grading Report. 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. Tanzanite is unique due to its exceptional pleochroism (an optical phenomenon in which a stone has different colors when observed at different angles). The center stone is decorated in an art nouveau pattern with the pendant loop and the bordering the center stone with 93 prong set round brilliant cut diamonds with a total weight of 1.05cts and the a clarity of VS - 1 to SI - 1 and features a color gradient of F - H. Finding a pendant as this is a once in a lifetime opportunity. The piece comes complete with AIG(American International Gemologists, a GIA certified lab AIG Appraisal Number#: 000721083003) report and appraisal confirming the above info and giving a total value of $27,600.00.