A beautiful tanzanite engagement ring from the famed New York jeweller Tiffany & Co. The violet-hued cushion-cut tanzanite stone is surrounded by a double halo of round brilliant-cut diamonds that continue on the platinum band. This tanzanite ring would make a wonderful and unusual engagement ring for the woman seeking something different. Tanzanite, originally known as blue zoisite, is a highly prized gemstone that was formed beneath the volcanic plains of Mount Kilimanjaro in Tanzania. It wasn't discovered until 1967 and was renamed tanzanite by Tiffany & Co., branding it as a uniquely African gemstone. This Soleste tanzanite ring is available to buy online at Tiffany & Co.