Rogerley mine, Frosterley, Durham Co., England - Very nice and esthetic fluorite specimen ! The rock hosts a number of cubic fluorites showing the classic green color under artificial light that becomes blue under the sunlight ! The fluorite crystals  are up to 1.5 cm on the edge and most of them are 1 cm on the edge ! I count close to more to 2 dozen crystals ! Among them there is a dark black galena crystals 1 cm in size ! An old timer since this specimen has been aquired in the 2000 ! it comes with the orihinal label from the mine. Overall size is 5.5x5.5x4.5 cm