“Hey there, Stud! Tell me about yourself!” You got it. Simple, Stunning, Sparkling. This set of studs is base metal 925 Sterling Silver. Meaning Hypoallergenic, water and sweat resistant. There is no need to take our tuned earrings off throughout the day or night. One 5.7mm clear CZ crystal is prong set on each earring (For a total of 2 gems per set), the total width of the earring approximetly 6mm. This is usually the average size for studs with gems, and won’t overload your ear lobe or weigh it down. Each set of these CZ earrings will also come with a set of butterfly backs to secure the earring in the lobe. Great item for layering on the ear if you have multiple piercings.