This piece of Malachite-Azurite came from Morenci, Arizona. It has a polished top, but you can see a few unpolished spots, intentionally left by the lapidarist. The stone has a lot of character! It's set in silver with a wide band, about 8 mm.
Approximately 5/8" wide x 3/4" long.
Clean with a soft brush and buff with a soft cloth.