Gorgeous "Black Diamonds" earrings, long and glittering clip backs, c1940. These gleaming beauties are only marked with Patent numbers but I believe they are old Hollycraft jewels from about 1940. They have the great imprinted clip backs of the 1930s-'40s that are so unusual. In great condition (except for a marcasite used as a replacement stone), these earrings they look fabulous on the ear. They measure 2-5/8" by about 3/4" at widest. Great for collectors of old vintage costume! If you have more information, please contact me.