Sterling Pendant - Amethyst Quartz & Copper Polished Oval Cabochon 

3/4" x 1-1/8" Rock / Stone Lapidary - Stamped:  925 on bail. 

 Sterling Silver Pendant overall inches 15/16 w x 1-1/2 long, weighs 10 grams has very good depth

Back has rim with open center, but no maker markings that I could find

 overall excellent condition