When I put one of the diamonds in my tragus piercing, it was fine... no redness, irritation or swelling. I thought cool, since my skin is annoyingly sensitive, and I was worried about the metal. The bar was almost too short, but so far-so good. UNTIL a couple days later when I woke up, the skin around my tragus piercing began to bruise and swell up. I (painfully) removed the jewelry to find a small piece of the DIAMOND stuck in my piercing hole like a tiny piece of glass! It was not a good experience, and I've learned not to order jewelry online- just go to your piercer and have them remove and install real jewelry the safe way! Duh!