Calcite on Amethyst, Guanajuato, Guanajuato, Mexico, ex. William A. N. Severance Collection 91.14, Small Cabinet 4.5 x 5.3 x 9.0 cm. $2500. Online March 3.
Showy calcite rhombohedron 3.2 cm on edge perched on banded white and purple quartz. The calcite is multi-zoned in shades of white and light gray and covered with a sparkly late stage druse. Simply a beautiful specimen from this classic Mexican locality. Ex. C. S. Bement Collection acquired for $3 in 1894. Ex. American Museum of Natural History No. 6714. Rare on the market and a superlative piece.