Patent ID: 8066811

Claim:
A pigment exhibiting a color-shifting effect comprising a base material; a first layer having a first optical thickness; a second layer having a second optical thickness; a third layer; and optionally an outer protective layer, wherein said base material is a mica; said first layer and said third layer each independently comprise a metal oxide having a high refractive index; said second layer comprises a metal oxide having a low refractive index; said base material is coated with (1) said first layer, (2) said second layer, (3) said third layer, and optionally (4) said outer protective layer, said first layer being in direct contact with said base material, said second layer being in direct contact with said first layer and said third layer, and said protective layer being in direct contact with said third layer; said first optical thickness is greater than an optical thickness of silver-white interference color and smaller than an optical thickness of golden-yellow interference color; and the pigment exhibits a color-shifting effect.