“Ultramarine Blue (Green Shade) is an intense deep blue color with the least reddish shade (hence green shade) of ultramarine blue from the inorganic pigment of sodium aluminum silicate composition. It is a Transparent, fine-grained color with high tinting strength. This ultramarine blue is ground in linseed oil without additives to change the effect of the pigment and oil mixture. As a result, the paint is long producing slightly stringy brushmarks due to the hydrophilic nature of ultramarine. Although ultramarine oil paint is not unique, this is a novel variation of this popular color.” -Natural Pigments