Very Unique Vintage Carved Green Onyx Screw on Earrings, hallmarked Mexico Silver. I have a similar ring & bracelet on other listings until they are sold. These old peices are getting very hard to find. These measure .75" x 5/8". I love the old patina however, the new owner can polish them up per preference. Item 834. MY LISTINGS GENERALLY CONSIST OF MANY ONE OF A KIND OR VERY RARE PIECES, SOLID 14KT ITEMS, STERLING SILVER, VINTAGE AND ANTIQUE PIECES, BOLD AND RUNWAY-ERA. DESIGNERS SUCH AS GIVENCHY PARIS NEW YORK, CHRISTIAN DIOR FRANCE, FENDI ITALY, VALENTINO, KENNETH JAY LANE, CHANEL, ALEXIS BITTAR, YVES SAINT LAURENT, HENRI BENDEL, HERMES, JUDITH JACK, KATE SPADE, MICHAEL KORS, MIRIAM HASKELL, CORO AND MORE.