This is an absolutely beautiful natural 12.98 carat Tanzanite and Diamond Platinum Ring. Tanzanite Is a very rare precious gemstone that is only found in the Usumburu Mountains that border the Umba Valley of northern Tanzania. 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 ring is from renowned designer Orianne Collins and is marked, "ORIANNE PT950" and “TA12.98ct D0.84ct”. The solid platinum ring features a heart cut natural Tanzanite with a total weight of 12.89 carats and 36 round brilliant cut diamonds with an approximate weight of .84 carats. The ring comes with a GIA (Gemological Institute of America) which confirms the above info and states that it is an authentic natural Tanzanite stone. The piece also comes with an AIG (American International Gemologists) report and appraisal which values the ring at $10,400.00. The ring shows a size of 7.25-7.5 US. For a complete representation of condition and for additional images please call 800-686-4216. It is the buyer’s responsibility to view each image and preview the item to determine condition.