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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.
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Pigment Classification: Inorganic
Color Index Name: PB 29
Color Index Number: 77007
Chemical Description: Polysulfide of Sodium - Alumino - Silicate
Opacity/Transparency: Semi-Transparent
Lightfastness Rating: I
Permanency: Not for exterior use
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
