These tiny little hand carved Lucite cups etched with the signature DW logo on the back hold a beautiful, sparkly Swarovski crystal in the front. Each stud is approximately 8mm or 3/10 of an inch in diameter. These earrings are hypoallergenic and great for every age group! Shown in the photo is Indian Sapphire crystal set in Onyx cup. Please be sure to check other color options and select your combo before check out.