I made this necklace using delicate 18k gold plated brass chain with an extender making it adjustable from 20"-22" in length. The pendant is an exceptional irregular iridescent purple Biwa pearl that hangs from an 18k gold plated bail. It has a 16k gold plated clasp and connecting rings. * Your purchase will arrive in pretty packaging CARE INSTRUCTIONS FOR PEARLS: To keep pearls radiant, follow the "last on, first off" ruleāput them on after makeup and perfume to avoid chemical damage. Gently wipe them with a soft cloth after each wear to remove oils and perspiration. Store them separately in soft, breathable pouches to prevent scratches and dehydration.