Platinum, tanzanite and diamond 'Petal' ring, Tiffany & Co., of cluster design, centring a bezel-set emerald-cut tanzanite stated to weigh 6.78 carats, framed by a line of brilliant-cut diamonds to a similarly set gallery under-rail and split shoulders, the diamonds together stated to weigh 0.64 carat, signed Tiffany & Co., numbered 33279922, size O. Accompanied by a Tiffany & Co., retail price update.