Window crystals are designed to be hung in a well lit space, preferably where they can catch the rays of the sun which will then create a beautiful rainbow effect through the crystal into the room. We have a whole host of these hanging in the windows of our shop and when the sun catches the windows the multiple rainbows dancing across the shop are quite breath taking.
They also work well to decorate simple chandelier and lamp fittings, make stunning focal points on necklaces, and add a little sparkle to mobiles.