Mystic Topaz rainbow gemstone open work sterling silver post earrings. Good used condition with little to no signs of normal wear. Great patina.  Post stud earrings come with new sterling silver earring backings. Each stone is 12mm by 10mm and 5ct. 

Acid tests positive for sterling silver. 

Gemstone tests positive for topaz on Presidium II gemstone tester. 

Earrings measure 3/4ths of an inch tall and 7/16ths of an inch wide.