Upgrade your existing lighting or add a distinctive finishing touch to any table lamp with a designer lamp finial. Crafted from natural larvikite with black and grey tones and plentiful shiny chatoyant inclusions. Round, donut form on a knurled chrome swivel base. This mineral resembles granite. Handmade in Wisconsin. Meticulously prong-set and fixed with jeweler's-grade adhesives. Shiny chrome tone (polished nickel) finial base(s) will fit a standard-size lamp harp with a 1/4" stem. This finial measures 3" tall and 2" across approx. Coloration may vary based on the nature of the material and varied light sources. I partner similar stones with their best match when ordered as a pair.