Dims: 2.2 x 1.3 x 0.6" (5.6 x 3.3 x 1.5 cm)
Wt: 19.6 g
Willow Creek, near Nanton, Alberta, Canada
This thumbnail specimen consists of a single, double-terminated Selenite prism. It is in near-perfect condition, showing almost no visible human-induced damage, and has exceptional monoclinic prismatic form, with well-defined edges and slightly striated but extremely clean faces that possess a pearly luster. The Selenite is colorless, transparent, and very clear, though it does contain a few inclusions. Some of these consist of parallel, planar internal fractures that contain a small amount of a greenish-brown impurity, but two of the inclusions are made up entirely of this impurity and are aligned opposite each other, along the two main acute angles of the prism. Their shapes are definitely geometrical, so these could, in effect, be called phantoms. They provide only minor interference in seeing the glowing "quadrants" that these crystals show under shortwave UV light.