Features: A natural stone agate burnisher, ideal for metal clay work and for applying gold and silver foil. Also works to burnish unfired metal clay. Can also be used like a metal burnisher for smoothing, but unlike steel versions it wont damage stones. Grinding can add water or polish oil. Excellent for wax clay and PMC work Agate Burnisher only, others are not included Specifications: Quantity:1PC Color:As picture shows Size:AB Style:19.5cm/8in CD Style:25cm/10in(Approx.) Material:Agate Package Include:1Pc Agate Polishing Knife Note: 1.Please allow 0.1-0.3cm differences due to manual measurement, thanks. 2.Please understand because of the light irradiation or computer display difference, so I can't guarantee photos and real color is 100% the same.