Umber is essentially clay, and this variation on the PBr7 pigment is the lighter (un-burnt) version of this classic earth tone that originated in the Umbria region of Italy.
Pigment Classification: Inorganic
Color Index Name: PBr7
Color Index Number: 77492
Chemical Description: Natural Iron Oxide containing Manganese
Opacity/Transparency: Opaque
Lightfastness Rating: 1
Permanency: Excellent
Munsell Notation Listing: N/A
Gloss Average: N/A
Viscosity Range: 75-100 CPS
CIE L*a*b* Values: N/A
Tint Strength: N/A