This list is for 3 pairs of earring studs showing in the pictures: dragon, t-rex & brontosaurus.
Material: sterling silver
Size of the dragon earring studs:15 x 9 mm (about 17/32 x 11/32)
Size of the t-rex earring studs: 12 x 9 mm (about 15/32 x 11/32)
Size of the brontosaurus earring studs: 11 x 9 mm (about 17/32 x 11/32)