This brooch has a lovely rounded piece of malachite that measures 1" by 3/4". Bezel set in sterling with rope, raindrops and chisel work. Total size 1 1/4" by 1", sturdy safety clasp. Marked sterling and F. Sandoval, who is a Navajo. Excellent condition. It has patina, which the flash doesn't show. I have had this piece in my collection since the 1970s.