The top choice of the most exacting printmakers Charbonnel inks feature pigments chosen for their low acidity and exceptional lightfastness. Blended with top-quality oils and carefully milled to ensure trouble-free printing these are the inks of choice for exquisite lasting works of art. The pigments are chosen for their excellent lightfastness and low acidity. They are blended with top quality oils and finely milled to ensure trouble free printing and lasting works of art. the detail and subtleties of an artist’s work come to life with Charbonnel inks. Highest pigment load and vibrancy Lightfast colors Wide range of blacks for various techniques Excellent for all forms of intaglio lithography and monotype.? Metallic Colors (Gold and Silver) Gold has a natural bronze base pigment and silver an aluminum base pigment. The pigment particle size of the shades is larger and the paste thicker than the others because they cannot be ground. Grinding would actually crush the pigment which would lose all its metallic characteristics.