Pigment Name: Natural Ferrous Silicate containing Magnesium and Aluminum Potassium Silicates
Lightfastness: ASTM I - Excellent
Opacity: Transparent
Grind: Medium
Series 3

The true Brentonica earth. Semi-transparent, slightly gritty, with a velvet-like, soft, light-absorbing surface. A delicate green. Not an opaque olive.