£450 €510 $587 approx. This specimen is priced in pounds sterling, all other prices are approximate.
The Quartz matrix has an incredibly rich and thick coverage of fibrous Boulangerite coating both sides of the specimen, with a beautiful silky lustre. Gemmy prismatic Quartz crystals to 9mm length poke through the dense coverage adding a pleasing detail to the specimen. Most Boulangerite specimens from this area are quite compact and massive - therefore this could be regarded as a rare and fine example with its thick 'head' of Boulangerite 'hairs'. Donated by Dr T.B Wilson to the Philadelphia Academy of Natural Sciences, accompanied by old labels.