Patent ID: 8349067

Claim:
A pearlescent pigment, wherein the pigment is an inorganic material comprising FeOOH and comprises a substrate and a first layer, wherein the first layer comprises iron oxide, wherein the iron of the iron oxide has from about 1% to about 30% Fe(II) and from about 70% to about 99% Fe(III) and the substrate is selected from the group consisting of natural mica, synthetic mica, glass flakes, Al 2 O 3 platelets, SiO 2 platelets, BiOCl, borosilicate, synthetic alumina, and boron nitride, and the color of a homogeneous coating of the pigment, measured over a white background, is selected from the group consisting of: a CIELAB L* value of about 30 or less and a chroma value of about 3 or less; a CIELAB hue angle, h ab , from about 50 to about 80 degrees, wherein L* is not more than about 85, and the chroma value is greater than 22; a CIELAB hue angle, h ab , from about 80 to about 275 degrees, wherein L* is not more than about 80, and the chroma value is greater than about 10; and a CIELAB hue angle, h ab , not less than about 275, or not more than about 58.99 degrees, wherein L* is not more than about 85, and the chroma value is greater than about 9.