Genuine Japanese 1 yen coins adorn these earrings, with a large 1 on one side and some bamboo on the other. These coins were collected during my tour of Japan several years ago. These coins were actually in circulation, so there may be some minor wear, but I've thoroughly cleaned and scrubbed them. They've been polished, but some marks may still show through. I believe the coins are made from aluminum, which is why they're incredibly lightweight. They're perfect for sensitive ears. The earring hooks are sterling silver, stamped 925. These will be shipped gift-wrapped. Please see my profile for more information about my jewelry and my store policies.