Save birds from window collisions with these gorgeous butterfly window clings. Window Gems break up reflections on the glass and warn birds away in time to avoid window strikes. Comes in a package of 8 butterflies. They range in size from 2" to 6" across. Handmade in Mount Shasta, California Window Gems are made with a translucent prismatic vinyl which captures sunlight and turns it into amazing rainbows throughout your space. They are stunning, constantly changing, and perhaps a teeny bit magical. Any bright light source makes the gems glow with colors, even moonlight.  The decals stick to the window purely with static cling, not adhesives, so they are movable, reusable and never fade.