Green Onyx Earrings

Purchased from jeweler in VA in the 1980’s.Back of one is stamped. 925 Mexico TA-148 and the silversmiths name. T is the city it was made in (Taxco) and A is the smiths first letter of last name. 148 means this smith is the 148th listed in Taxco starting with an A.Two parts are connected so that bottom part moves. About 2 inches from top to bottom and 1 inch across bottom piece. Quality jewelry. All 4 stones are same color, dark green. In photo they may not appear same.