Vintage Alpacca-Silco Bent Fork Bracelet Malachite(?) Silver Plated Made In USA

Vintage Alpacca-Silco cuff open bracelet . Made in USA Color : silver color, green stone ( malachite?) Size : 2 3/8 in. diameter; 7/8 in. widest part; 2/8 in. narrow part  Description :  Alpacca-Silco bent fork bracelet , artisanal piece of jewelry. Crafted from alpaca silver ( alloy of copper, nickel and zinc, often used as a substitute for sterling silver) The bracelet is made by bending a fork into a cuff shape .Crafted from a vintage Sheffield fork dating back to the 1950s.  Features large green stone ( malachite? )  in cabochon shape . Adjustable open design to fit various wrist sizes. Numbered #13 ; Alpacca-Silco. Made in USA.  Condition : Good vintage condition, no major flaws. Imperfections: a couple of tiny stress marks ( pictured) due to size adjustments over the years