This is blue-green, gemmy fluorite cubes that make up a beautiful piece for the locality. The overall dimensions of the piece are 16 cm wide by 9.7 cm tall and 5.6 cm front to back. The largest cubes are almost 3/4" on an edge but most are smaller. All the cubes have the identifiable photosensitive green cube to blue cornered cubes in the sunlight or ultraviolet. This piece is intense green color under tungsten lights. The locality is the Rogerley Mine, Frosterley, Durham County, England. A few of the crystals near the edges show some damage. The back and edges have been groomed to make the piece display better.