Cubic System

Also known as the isometric system. All three axes are of equal length and intersect at right angles. Based on a square inner structure.

Crystal shapes include:

• Cube (diamond, fluorite, pyrite)
• Octahedron (diamond, fluorite, magnetite)
• Rhombic dodecahedron (garnet, lapis lazuli rarely crystallises)
• Icosi-tetrahedron (pyrite, sphalerite)
• Hexacisochedron (pyrite).

Common Cubic Crystals:

Diamond	Fluorite	Garnet
Gold	Pyrite	Silver