Jewelry stores that sell designer platinum jewelry are Tiffany & Company and Ross-Simons. Five times rarer than gold, platinum in jewelry is at least 90% pure and is whiter than white gold. It does not tarnish or distort when exposed to heat, and develops a lustrous patina over time.
Because platinum is heavier and stronger than most precious metals, it is commonly used as a secure setting for diamonds. The metal is also hypoallergenic.
New York-based luxury jeweller Tiffany & Co. sells several varieties of platinum necklaces, bracelets, wedding bands and rings, pendants, and earrings. Many of the platinum pieces are combined with diamonds and other precious stones such as sapphires, aquamarine and tanzanite. Tiffany & Co. operates close to 300 physical stores worldwide with more than 120 physical stores in the Americas. Its website is an e-commerce site.
Rhode Island-based multi-channel jewelry retailer Ross-Simons sells a variety of platinum engagement and wedding rings all set with diamonds. The rings are designed by jewelry artists such as Henri Daussi, Roberto Coin Cento and Gabriel Designs. Ross-Simons operates several branches as well as the high-end Sidney Thomas Jewelers. Its website is also an e-commerce site.