There's optical science and high school physics, and then there's making pretty colors with this little 4-1/2" x about 1" acrylic prism. It makes the same rainbows that the beveled edges on the glass in the French doors to your grandmother's living room used to make on the floor in the afternoon while she was making supper. If you had a grandmother with French doors with beveled glass, who made you supper. If not, you'd better buy this prism or you won't have anything to remember after she's gone.

Like a switchblade, but optical. Push the button on this 2” x 1” x 1/14” black plastic case and watch a 3/4” dia approx 10X acrylic loupe pop out, ready to rumble. If the Sharks or Jets squared off against the West Side Antique Dealers or Stamp Collectors….