This is an absolutely beautiful natural 4.51 carat Tanzanite and Diamond Platinum Ring with an incredibly rare genuine AAA quality. 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". The solid platinum ring features a fantastic oval modified brilliant cut with brilliant cut crown Tanzanite stone with a total weight of 4.51 carats and AAA to AA quality / clarity with beautiful transparent eye clean finish with rich Violet Blue color and rare pleochroism giving different changes of colors when moved. The ring, which is a custom luxury solid platinum setting, shows the center large stone being prong set and surrounded by a Art Deco Antique style wide wave like halo bezel that is diamond set and supported by a lattice under gallery with intricate filigree paisley or swirl detail. Overall, the ring is set with 39 prong set baguette cut tapered natural Diamonds with a total weight of 1.92 carats, VVS2 to VS2 clarity and G-I color. The piece comes with an AIG (American International Gemologists, a GIA certified gemologists AIG# 000720080041) report and appraisal which values the ring at $22,400.00. The ring shows a size of 6.5 US.