Vibrant Red Sardonyx Earrings in Sterling Silver Clip-on

Large sterling silver clip-on earrings. They are set with vibrant red sardonyx You can see some faint color bands in one of them. Hallmarked on the back. Made in Taxco, Mexico. They measure 1 1/8" by 7/8". They weigh together: 21.1 grams. Silver has some tarnish. Vintage.