Yes, eventually the black enamel will wear off, the basic nature of gold and sterling silver will not allow any enamel material to adhere permanently. 

Royal Hawaiian Heritage Jewelry offers a lifetime guarantee on our enamel.  

For instructions on returning your heirloom's for re-enameling email us at <a href="mailto:reenamel@rhhj.com"> reenamel@rhhj.com</a> or call us at 1-800-843-8533.<BR><BR><BR><BR><BR><BR><BR><BR><BR>