The silver Mercury Glass Illumination, in an all over hobnail pattern, glows when illuminated with golden light. Illumination Fragrance Warmers, our best-selling collection, bring a stylized touch and a warm glow while releasing fragrance from scented wax melts and tarts. Designs feature an array of styles and price point for every budget. Materials range from hand-forged glass, metallic finishes, and classic ceramic and porcelain. Choose from an array of styles that fit seemlessly in the modern home, farmhouse home, transitional home, country home, traditional home and more! NP5 Warming Bulb included in all Illumination warmers except fireplace warmers, which have a warming plate and no bulb.