In mixing if you find umbers too “smoky or atmospheric”, you will find this to be very crisp and rich. We have seen it used to create viscous, tarry looking surfaces as well as very lustrous, sleek rich browns like fine mink fur.Series: 4 CI Number: NA CI Name: PR101 Pigment Name: Synthetic Iron Oxide Lightfastness: ASTM I - Excellent Opacity: Semi-Transparent Grind: Coarse