Madewell Stone Collection Citrine Stud Earrings Pretty and powerful, our Stone Collection is made of wearable good vibes. In an earthy prong setting, these stud earrings showcase semiprecious citrine (which, some say, has a positive and joyful energy). 1/4"W x 1/4"L Titanium post back Brass/goldtone plate/citrine Imported