The nightlight is made with Spectrum Frit (Crushed Glass) melted in a mold. The nightlight measures 4 x 3 counting the nightlight. All my creations are fired at temperatures up to about 1500 degrees and then annealed (slowly cooled) for strength and durability. Since glass working is not an exact science, some small imperfections may be appear on the glass. Each light comes complete with bulb. Would make a excellent Gift!!!!