Jacquard Pearl-Ex Pigments are non-toxic inert powdered pigments that exhibit extreme colorfastness and stability. Beautiful pearl-like colors. They are ideal for interior, exterior and archival application. Pearl-Ex Pigments can be incorporated into any viscous medium or paint such as oil, acrylic, gouache, varnish and clay or they may be applied dry on any wet painted surface. Their temperature resistance allows firing in a kiln up to 600 degrees. Standard bottle holds 3/4 oz of pigment.