Chinese Export Ring in Sterling Silver with Jade and Cloisonné Size 6

Vintage Chinatown Chinese export sterling silver ring. It is set with green jade and has cloisonné decoration. Marked silver tested sterling with gold overlay. It was once adjustable, but the owner soldered the shank to a size 6. It is 3/4" wide. Weight: 7.7 grams. Cloisonné design is a butterfly and has no chips. Gold has wear and patina.