Catalogue entry no. 6 by Max Loehr:
6 Pi Disk
Variegated apple-green stone with grayish white clouds. Sturdy, fairly smoothly polished disk of a slightly uneven thickness, flawed by a depression that has not been worked off. Imperfectly circular, conical perforation drilled from one side. Neolithic(?). An X-Ray diffraction test undertaken by Cornelius S. Hurlbut, Jr., revealed the material to be serpentine.