... Pigment Lava Series is one of the most popular series in our product line.These special effect pearls can give ... the products as pearly and metallic. Yortay pearl pigments are in a great variety, including Conventional Pearls and Yortay Special Effect Pearls. ... - acid, anti-alkali, anti-high temperature, non-flammable, insolvent in water, good dispension and so on. Therefore, Our pearl pigments ...