Blockx Watercolors, decorative box with 12 half pans. The box is made of enameled steel, protected by a felt cover. Blockx's extra-fine watercolors all exhibit exceptional lightfastness (rating 7/8 on the international BWS measurement scale). The watercolors are made from rare, finely ground pigments that are coated with gum arabic and honey to enhance the durability of the colors and give them more shine and brightness. They offer a glossy finish and a creamy texture.