Our Beach Stone Lamp Finials feature stones that have been massaged by the ocean until they're round and smooth. We select stones for their smoothness and depth of color. The colors may vary slightly from those shown in the photo. As with most of the items we make, Mother Nature has the final say. Each stone is drilled and epoxied to a brass-plated base that fits a standard lamp harp (¼" x 27tpi). The completed finial measures from 1½" to 2½" tall including the base.