Opal-(AN) - Tepetate, Mexico - 5.0 x 5.2 cm
Mineral: Opal-(AN)
Locality: Tepetate, Municipio Villa de Arriaga, San Luis Potosí, Mexico
Dimensions: 5.0 x 5.2 cm

Description: Bubbly transparent hyalite opal on a matrix of spongy tan chalcedony from a find in early 2016.