Indigo Blue Cloisonné Butterfly Moth Earrings in Sterling Silver

Vintage Chinese export sterling silver screw back earrings. They have butterfly or moth shaped drops that hang by chain and are decorated on both sides with indigo blue Cloisonné. They creatures are different from each other, but the same color and were designed this way. 1 3/8" long. Total weight: 5.9 grams. Some wear.