A very beautiful piece of history. The bracelet is solid sterling silver, & the coins are made from the silver bars recovered from the Atocha & comes with a certificate stating that. I use 4 different & unique shaped coins for this bracelet & each coin is connected by a shackle links to give it a more nautical look. The bracelet is adjustable from 7.5-8 inches. I can make any lenght you want. A very detailed & beautiful piece of history Atocha Silver Bracelet Shipwreck Sunken Treasure Coin