A REALLY SHARP complex boleite crystal of the rarest habit (i.e. not a cube), measuring approx 6 mm. This is a complete floater. Obviously, if you wanted, you could break the glass and get it out. We left it in, to prove the age, and that it is assuredly one of the boleites collected during Eduard Cumenge's famous expeditions in the late 1800s to this locality that described the species. Thus, it might even be fair to say it is co-type since he found it at the same time he brought back the famous larger pieces in the Sorbonne, from which the species was described. approx 6 mm diameter