- Calcite, Quartz (Var: Amethyst)
- Cabinet, 11.4 x 8.3 x 4.8 cm
- La Sirena Mine, Guanajuato, Mun. de Guanajuato, Guanajuato, Mexico
This amethyst specimen is a bit different in that there are both little gemmy crystals and snowy puffballs of calcite decorating the surface of the amethyst. Ex. Mullane Collection.