This elegant ring is crafted in yellow gold over .925 sterling silver and features a vibrant combination of peridot, pink tourmaline, and white sapphire gemstones. Peridot, pink tourmaline, and white sapphire gemstones = approximately 3.07 ct. tw. Material: Yellow gold over .925 sterling silver Imported It is customary to treat most gemstones to achieve enhanced color and durability. Some of these treatments may not be permanent, and may require special care. Please note: In product titles ct. tw. refers to the total carat weight of all diamonds and/or gemstones combined.