Fluorite octahedron crystals, these mineral specimens display in excellent quality another variation of fluorites crystal habits, the octahedron. The crystals each have exactly 8 faces, hence the octahedron name. During formation, if the crystals have four perfect cleavage planes, octahedral shapes are produced. These particular samples come from China, each one is slightly translucent, letting though partial light and they all vary slightly in colour through various shades of green, purple and clear. We offer them in two sizes small and large.