Rare Gutta Percha (paper Mache) Marble.
Circa 1870. Black base with mustard yellow, oxblood red, tan, blue, and gold. Colors produce an iris-effect. Nice pull of colors toward single pontil and nice flow of colors on opposite end. Extremely rare size for a gutta percha and hard-to-find.
Condition (9.5). Size 2 - 5/16" Dia.