This Om decoration can be hung on the rearview mirror or in a window. The Om decoration is made with a lead-free silver Om charm which hangs in the middle of the silver circle. There is a teardrop prism crystal hanging in the middle of three dangles. The crystal dangle is wire wrapped together with silver comet Swarovski crystals and a nicely designed etched silver metal bead. The two smaller dangle on each side are wire wrapped with clear faceted round crystals and smaller silver comet Swarovski crystals. There is another faceted clear crystal at the top for a little extra sparkle. This crystal Om decoration will give off rainbows when in direct sunlight, but not enough to cause any problems while you are driving. It comes on your choice of a silver chain with clasp (for ease of hanging on the rearview mirror) or on a 6″ chain with a ring so that you can hang it from a hook in a window or wherever you choose.