“Specimen of black quartz with a lucid, well-formed, bi-terminated crystal immersed in white anhydrite. This is an old specimen, today unfindable in the locality mentioned. Finding: about 1968 Overall piece size: 7.5 x 3.5 x 6.0 cm Size of the quartz crystal: 2.0 x 1.2 cm Luigi Geroli private collection.”