At Blue Nile, all our platinum bracelets are made of platinum. Blue Nile gold bracelets are made from the finest 18k. This provides a perfect match of beauty and durability. Pure 24k gold is soft and easily bent while 14k gold is mixed with other metals that potentially dull the color of your gold bracelet. Our silver bracelets are crafted from the highest-quality pure sterling silver, and all are inspected for a fineness mark to ensure quality. Our sterling silver charm bracelets and charms are created exclusively for Blue Nile. Our high-quality charms feature a custom lobster claw, designed to precisely fit either of our unique bracelets.