This beautiful vintage ring, pill, or trinket box is made of Alpaca silver, which is not true silver but an alloy of copper, nickel, and in this case, zinc. The hinged lid is inlaid in bright green dyed shell with a mother of pearl flower and abalone shell wedge pieces. The box closes with a ball and loop type clasp. Marked Alpaca Mexico on the underside. Alpaca can tarnish as you can see, I haven't tried to polish it. Measures just 1-1/2 inches diameter by a little over one-half inch high.