Necklaces / Pendants by John & Dawn Field This blue/green gemstone necklace features a sterling silver star centre piece. The stones on the necklace are, turquoise, chrysoprase and rock crystal . The sterling silver quality chain and fastening measures 17 inches, 43cm in length.John and Dawn also make matching ear studs and earrings, please browse their page for the full selection. Features Primary Material : sterling silver Other Materials : gemstones Length (inches) : 17 One of a Kind : No Metal : sterling silver Gems : chrysoprase, rock crystal and turquoise Hallmarked : No Cleaning InstructionsThe centeral star sterling silver drop has been coated with a clear protective layer to help prevent tarnishing. A gentle wipe with a silver polishing cloth shoul keep the chain tarnish free.