For your consideration is a pair of antique cabochon natural green moss agate sterling silver earrings.  They are 3/4" in diameter.  I have not cleaned them as I like to leave them in natural condition.  If you do clean them I would recommend using it on the silver only as not to dull the shine of the stone.  They are marked "silver" on the back, made before the required "925" requirement.  Tested 925 or better.