Vintage 1950's sterling silver & onyx necklace designed & signed by Taxco, Mexico modernist Antonio Pineda. Interior wearable length is 16 inches. Both stones & silver are in beautiful condition. Clasp is tight & secure. Fully hallmarked on reverse. Truly a museum quality wearable work of art, this design was included in the recent museum exhibit SILVER SEDUCTION: THE ART OF MODERNIST ANTONIO PINEDA and is pictured on p. 133 in the book of the same name by Gobi Stromberg.