Watch a video of this specimen by following the Vimeo link below: https://vimeo.com/1126143516/1c2b15997d Here is a rare locality specimen of villiaumite in syenitic pegmatite from the Rouma island, Los archipelago, Guinea Conakry! It displays reddish crystals of the rare magmatic-hydrothermal sodium fluoride in combination with dark pyroxene. Ex coll. Rollet family (Lyon). The Rollet family owned several mines in Madagascar since 1920, prospecting for new deposits, mining and exporting minerals for industrial uses (mainly phlogopite) but also gemstone roughs and collectable specimens. Founder Marc Rollet was a very early mineral dealer in France. The collection features many specimens of historical and systematic interest from Madagascar, as well as a variety of French and international classics from the last century.