look into my crystal ball *you need these earrings*! these sterling silver cz crystal ball hoop earrings add a touch of sparkle to any outfit. the crystal ball itself measures 5mm, and they hold 48 clear cz crystals, each measuring 1mm. the earrings are held in place with fishhook fastenings. despite all this they weight just 1 gram and come complete with a 925 sterling silver metal stamp.