Wild Horse Magnesite is a natural gemstone from an Indian Reservation near Bisbee, AZ. “Wild Horse” magnesite is a marketing name as it's appearance resembles the pattern on the Appaloosa horse. The color is predominantly a luscious chocolate brown with white plumes. This material is similar in hardness and texture to turquoise. Sometimes called Wild Horse Turquoise (though incorrect) because it is mined in the same area as Turquoise.
This white and chocolate matrix cabochon would make a very striking jewelry piece.