Necklaces / Pendants by Alex Goodman This Big Planet Sweet Necklace is in Gold plated silver with moonstones and london blue topaz. They are also available in silver and combinations of semi-precious stones and in 18ct yellow gold with rose cut diamonds. Features Primary Material : gold plated silver, london blue topaz and moonstone Length (inches) : 24 One of a Kind : No Hallmarked : Yes Cleaning InstructionsTo clean please use silver dip.