This is a wonderful pair of Arts and Crafts sterling clipback earrings set with what appears to be turquoise, c. 1930. The stones tend toward apple green and have gold specks. They are signed 925 (i.e. sterling) and have a couple of maker's marks that I don't recognize - an "R" in a crescent and a candlestand with "VA" (see photos). The earrings measure 7/8" x 9/16" and are in excellent condition.