Group of very sharp adamite crystals showing an intense brilliance and color between yellow to colorless. Different orders prisms are present, isome of the end faces can remind the octahedron. Thus, in the specimen we can see very elongated crystals, some other flattened and almost equidimensional. Transparence and luster are really good. Crystals are disposed very aerial on a goethite matrix. This sample belongs to a German collection.