A striking, elongated, cabinet-sized crust aesthetically and richly covered with isolated, highly lustrous, pearlescent orthoclase (variety adularia) crystals from the Untersulzbach Valley of Austria. The sharp crystals reach 1.8 cm and some are doubly terminated. Green chlorite, often as tiny gemmy needles, are a nice accent. This fine piece is from the less common Sonnstagkopf Mt. area.