Lustrous, red-brown calcite crystals create a nice plate in this piece. The locality is Buena Tierra Mine, Santa Eulalia, Municipio de Aquiles Serdán, Chihuahua, Mexico. The piece measures overall 11 cm wide by 9 cm tall and is 4.4 cm front to back. This material has not been available in quantity for several years. Piece is in good condition.