Is a Uranium Oxide with formula: UO2 . Highly radioactive with traces of Radium and Helium as principle product of Uranium decay. Also can be found Thorium and other elements.
Is embedded with fluoriteand is a great rarity as facet gem. Handle with care and avoid long human exposure.It
comes from Shaft 235 ,Antonsthal,Britenbrunn,Erzgebirge ,Saxony-Germany.
Size: 8.4x8.4x5.5 mm.