Watch a video of this specimen by following the Vimeo link below: https://vimeo.com/1149537390/7ec1eb735c Here is a remarkable large specimen of orange-red orpiment on pyrite with oxides patina from old discoveries in Quiruvilca, Andes. Ex coll. Jean-Louis Gérard. J-L. Gérard was a collector with many interests, ranging from maritime objects to paintings, and from antique scientific instruments to minerals! Over several decades of collecting, he gathered tens of thousands of items in his family estate located in the Loir Valley. The recent sale of the estate and the collections was a major event.