These dragon earring studs are handmade at my studio in England.
Size: 15 x 9 mm (about 17/32" x 11/32")
The whole set of the dragon, t-rex and brontosaurus earring studs:
https://www.etsy.com/listing/168650479
The postage is the same regardless of how many items you purchase.
If you want them in other materials or sizes, please contact me for details.