From the Ocean - Silver Clam Shell Charm. Use this detailed conch shell charm for your mermaid, tropical, vacation etc. Artist Trading Cards, or use it for jewelry, scrapbooks and altered art as well. The charm measures 5/8 in. across x 3/4 in. from top of loop to bottom of charm x 1/4 in. thick. This is thick then any of my other charm. The other side of the charm is hollowed out, so the design is only on one side. You will receive charm for each quantity that you order.