100mm clear prism 4 inches long, 2-3/4 inches wide and 1-1/2 inches thick. Long facets ending in a series of diamond shaped facets both front and back with a hole to hang it by. Large and heavy enough to be a paperweight. As you can see by the pictures it was hard to keep the rainbows away. This is a large dramatic prism sure to please any collector. Beads and hanging filament included.