This vintage Onyx Necklace with an Aztec-style mask pendant from the 1960-70s is a unique piece of fashion jewelry. The pendant shape is a rectangle, featuring a green Onyx stone from Mexico. The necklace has a length of 28 inches and closes with a hook. In the unisex style, this original pendant exudes a sense of vintage charm and craftsmanship.  The pendant measures approximately 3 inches tall x 1 3/4 inches wide.