Williamsburg Handmade Oil Paints Ivory Black 150ml tube Professional Artist Grade Studio Painting Each Williamsburg oil color is made from pigments ground in pure, premium, alkali-refined and PH- balanced linseed oil to enhance its beauty and luminosity Used by the worlds finest artists Ivory Black: Cool black. Semi-opaque; often used as a standard. Slight grit gives a velvet surface. Pigment: PBk 9 - Amorphous Carbon produced by charring animal bones Lightfastness:I-Excellent