- Our Frost Lens is a clear molded borosilicate glass with frosted finish with a parabolic shape designed to carefully diffuse light from the light source. The result is an edgy display that exudes an energetic mood. When lit this gives off a light that is functional and vibrant. This handcrafted glass uses a process where every glass is consistently produced using a mold keeping variations to a minimum. Our Cool Dicro Lens is a molded borosilicate glass with a technologically advanced dichroic coating outer application in a parabolic shape designed to carefully refract the light rays in the light source. The result is an edgy blueish-purple display of light that exudes an energetic mood. When lit this gives off a light that is edgy and vibrant. This handcrafted glass uses a process where every glass is consistently produced using a mold keeping variations to a minimum. - Bulbs Included - Shade Wd/Dia (In): 3.5 - Title XXIV compliant - Primary Metal Composition: Steel - Shade Material: Glass - NOTICE: Due to the artistic nature of art glass each piece is uniquely beautiful and may all differ slightly if ordering in multiples. Some glass decors may have a different appearance when illuminated. Many of our glasses are handmade and will have variances in their decors. Color patterning air bubbles and vibrancy of the d�cor may also appear differently when the fixture is lit and unlit. Besa Lighting - OPTOS1W-FRCD-CR