Courtesy of Brand (4) Share on Facebook Share on X Share to Flipboard Send an Email Show additional share options Share on LinkedIn Share on Pinterest Share on Reddit Share on Tumblr Share on Whats App Print the Article Post a Comment Tiffany & Co. A tanzanite of approximately 8 carats is surrounded by round brilliant diamonds and rubies and set in 18-karat yellow gold and platinum on this Bird on a Rock bracelet; at Tiffany & Co., Beverly Hills Tiffany & Co.