An iconic staple piece in the Hydez Essential Collection, the Tris two-tone ring features sterling silver flat curb chain that seamlessly transitions into 18k gold vermeil. Creating the perfect fusion of these two precious metals, the Tris ring will be a core piece in any jewelry collection.Materials: Sterling Silver and 18K Gold VermeilDimensions: 5.3mm widthSizes Available: 6, 7, and 8 What is 18K Gold Vermeil?: 3 microns of 18K Gold over Sterling Silver. Vermeil is far more durable to wear than traditional gold-plating due to standards required by the U.S. Code of Federal Regulations.  With care, 18K Gold Vermeil can last many years without showing signs of wear. What is Sterling Silver?: Silver with a fineness of 92.5% pure silver and 7.5% copper. Sterling silver is known for its durability, hardness and high shine. Sourced from the Diamond District of NYC.