Huge ancient marble bactrian bead with decoration

Stone Bead Antique

Islamic

Marble

-

ca. 81x46mm

178gr

Huge ancient marble bactrian bead with decoration. Measurements are ca. 81x46mm, weight is ca. 178 gram. I aquired this bead from an antique dealer in england that claimed that this bead is authentic bactrian with typical round circle decoration. There are some damages and signs of antiquity.