Classic and unique! This fabulous necklace is a beautiful example of 1940’s Mexico Silver craftsmanship with the iconic green "onyx" mask as the centerpiece and smooth green ccabachons plus silver links for the chain. The green "stones" are commonly reffered to as Onyx, but may be crafted of glass, stone, or other material. Silver metal has a warm slight brass hue, however it is stamped 925 for sterling silver - I am not a jeweler and cannot verify the materials. Please purchase for beauty and history. Measuring almost 19 inches in wearable length and over 45 grams in weight this is a stunning and wearable piece of art. Stamp is worn, but you can read the artists mark, Mexico and "925" for sterling silver. CONDITION: Very good VINTAGE condition. NOTE: VINTAGE condition refers to an item that has years of wear and use and may have dents, marks or scratches from age (as we all do). Please review the photos carefully for item condition and scale (size) and ask any questions prior to purchasing as I want you to LOVE your new treasure.