Italian Gesso 5kg
Softer than chalk (3 Mohs scale of mineral hardness), its hardness of 1.5 to 2 makes a soft white gesso that is easier to polish to a smooth finish for gilding bases and painting grounds. Calcite or chalk, being a carbonate, effervesces on exposure to acids, whereas gypsum alabaster, when so treated, remains practically unaffected.
Recommended in Cennino Cennini's treatise on painting, Il libro dell'arte (often translated as The Craftsman's Handbook), to make "gesso sottile" for painting grounds. It makes a brilliant white gesso that can take a high polish for gilding. Add to oil colors and mediums as a transparent filler and to give body or in tempera as a white filler.
|Processing Time||Usually ships the next business day.|
|Size||5 kg bag|