Chinese Export Carved Bone Cloisonné Earrings in Sterling Silver Filigree

Vintage Chinese export screw back earrings C. 1935. These were sold in China town souvenir shops in the USA. These are of sterling silver filigree with Cloisonné enamel in blue. They are set with hand carved bone. Measure 3/4" square. Have a gold wash over the silver. Together they weigh 7.5 grams.