Pink, blue, and white glass marble found in the parlor of 607 Grove Street during archaeological excavation. The strands of colored glass are just below the surface of the marble. The thin top layer is clear. There are two bands of dark blue with thin white stripes inside; the pink is mixed with the white in thin and thick stripes. This style of swirled marble is considered a "Peppermint swirl."
Reference: Block, Stanley A., ed. Marble Mania. Atglen, PA: Schiffer Publishing, Ltd., 1998.