The same pigment originally used in the green of US currency, it is a very durable, lightfast and opaque color. (Series 3)

Pigment Classification: Inorganic
Color Index Name: PG17
Color Index Number: 77288
Chemical Description: Anhydrous Chromium Sesquioxide
Opacity/Transparency: Opaque
Lightfastness Rating: 1
Permanency: Excellent