Ultramarine Blue Golden Open 59ml
Pigment Classification: Synthetic Inorganic
Colour Index Name: PB29
Colour Index Number: 77007
Chemical Description: Polysulfide of Sodium-Alumino-Silicate
Lightfastness Rating: 1
Permanency: Not for Exterior Use
Historically a very expensive ground lazurite pigment, synthetic pigment has been used since the 1830's making it one of the most popular and affordable blues, Yves Klein blue is mostly Ultramarine.