Oval blue Sapphire, straight baguette Aquamarine and round diamonds station necklace in bezel set Metal: 18k white gold Gemstone: approximately 1.63 total carat weight Diamond: approximately 0.20 total carat weight, Color G-H Chain: 18k white gold rolo chain made in Italy Chain length: 20 7/8 inches Lobster claw clasp closure Rhodium: Yes; increase shine, luster and durability and help with scratch resistant. All carat weights are approximate Almost all gemstones have been treated to enhance color and clarity and require special care. All Lo Spazio Jewelry has been custom designed and handcrafted in California, USA