Pearl & Lab Grown Gemstone Silver NecklaceThis is a beautiful cultured pearl necklace with two round cubic zirconias set in sterling silver. The sterling silver chain is a 45cm long that can be shortened to 40cm. The pearl is 6mm in diameter. The cubic zirconias are brilliant cut 3mm in diameter. The pendant from top to bottom is 15mm long. A cultured pearl is a real pearl that has had a helping hand. Pearls grow when a grain of sand or other foreign object gets inside a mussel or oyster.