A superb and aesthetic specimen of bi-colored, highly lustrous, blocky wulfenite crystals on a 3-dimensional matrix of white calcite from Los Lamentos. The cluster at the end and the isolated crystals are dramatic. The white calcite is very highly desirable for Los Lamentos wulfenites, and is in fact, very rare. Very nearly pristine, with only minor bruising on three crystals, all on the periphery. Ex. Jack Halpern Collection.