MADEWELL Archival Coin Necklace Make like planet HD 131399Ab (seriously—look it up, it has three suns) with this better-than-vintage gold-plated necklace featuring a trio of sparkly coins. Bonus: The chain is adjustable, so you can wear it a bunch of different ways. Length: 17" with a 3" extender chain for adjustable length. Gold-plated brass, zinc, cubic zirconia. Spring clasp closure. Clean your jewelry after each wearing with a soft cloth.