Gold Plated : They are gold plated and 925 sterling silver material. They are not easy to be broken or crush. And you can feel free to push the claws to hold natural agate or moonstone. Usage: These claw stud earrings are mainly used to make kinds of stud earrings. You can creat various reshinestons, pearl or cubic zirconia study earrings by fitting the right sized stones perfectly. Easy To Use: The claws of stud earrings are very easy to bend. You bend it into position and hold well with little force. And their smooth surface makes your study earrings look more professional. 5 Sizes Stud Earrings: The stud earrings are 4mm/5mmm/6mm/8mm with 1mm hole and the pin is 11.5x0.8mm. You can make various jewelry because these can meet your needs. Suitable size also fits the stone you want to put in well. Meaningful Present: You can spead some time to creat a jewelry as a gift by putting natural agate and moonstone in. And you can give this lovely gift to your family and friends on special dates.