Adelphe, an expensive London jewelry line that "refashions" antique jewelry found in flea markets and antiques shops, is selling mismatched earrings. Adelphe's owner-designers look for earrings related in size and setting types and offer them as a pair. Visit Adelphe.co.uk; the jewelry is sold at only a few retail shops in London and Paris. In the 1950s, teenagers thought it was clever to wear mismatched socks or earrings. It always started a conversation. Today there are dealers in the United States who feature "orphan earrings," but usually to be used as pendants or charms. You can find single earrings at meltdown prices at many shops that buy gold and silver by weight.