Emerald Green Ribbed Glass Catalytic Effusion Lamp with Ornate Gold Tone Cap

Catalytic lamps, also known as diffusion lamps or effusion lamps, are decorative home fragrance devices that use a catalytic combustion process to purify air and diffuse scent. They typically consist of a glass or ceramic vessel to hold the fragrance oil and a burner assembly, often made of metal, which contains a wick and a catalytic stone or wick. The heat generated by the catalytic process is what drives the diffusion of the fragrance and air purification. These lamps gained popularity in the late 20th century as an alternative to candles and plug-in air fresheners, offering a more sophisticated and effective way to scent a room. The decorative nature of the glass vessels, often made in various colors and designs like the ribbed emerald green seen here, makes them collectible items. The ornate metal caps are designed to control the diffusion rate and add to the aesthetic appeal.