1.75" x 1.75"
On porcelain (that has a great high-fired sound) is Earth crust slurry from the Kane Fracture Zone on the Mid-Atlantic Ridge, with a well of sea glass. The blue and turquoise have clear sea glass mixed in -- but color intensity comes from Christina's wine bottles, and marbles from --- a STORE! Yes, Joan is not ALWAYS a purist. People love the color. Cpomes with a nice wool felt bag and drawstring plus a printout describing the geological deposit written by the researcher who gave me the rock slurry.
Use as you wish -- this clay is strong.