These small round sterling silver charms announce your favorite island in a subtle way. Available in "ACK" our airport call letters in sterling silver. . Whether you add this charm to another necklace or wear alone, this charm is a beautiful keepsake from your favorite place, Nantucket Island. Each charm is hand-stamped sterling silver and is rimmed in 14kt gold to give it exceptional depth, tone and dimension. Charm measures about 15mm in diameter (slightly under 5/8 inch).