Arts and Crafts Moonstone cheapest Sterling Earrings

Stunning vintage Arts and Crafts style sterling earrings featuring iridescent white-blue stones in oval and round cabochons cheapest. I believe these are moonstones, but I'm not sure. The stones rise from textured backgrounds, and there's a wonderful overall feeling of simple elegance. Posts with with push-on backings marked 925, as are the backs of earrings.

They measure 5/8" wide x 1 1/8" long and weigh four grams on my scale. Beautiful vintage condition with some light tarnish.