These are earring enhancers that you can wear to funk-up any KAMARIA stud! Studs sold separately. Sold as a pair. ~2" overall length (1" dangle when worn) 2.75mm bezels Lab-created opals Gold-plated over 925 sterling silver Compatible with all KAMARIA earrings. Designed for a 0.7mm post. If you want to use this enhancer on your own earrings, you may want to check if the post is larger than average in case it's too big for these post backs.