Pyrite, Quartz Cluster (George Augustus Tan Collection)Chemical Composition: FeS2Locality: St Denis d’Orques, FranceWeight: 637 g Dimensions: 14.5x 12.5x 6.0 cmA open shale concretion with pyrite crystals inside it.SKU: VPYR012ZNEGuarantee of Authenticity |Guarantee of Value GNE (20%)