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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. (Series 2)
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Pigment Classification: Inorganic
Color Index Name: PB 29
Color Index Number: 77007
Chemical Description: Polyulfide of Sodium-Alumino-Silicate
Opacity/Transparency: Semi-Transparent
Lightfastness Rating: I
Permanency: Not for exterior use
Munsell Notation Listing: Hue 8.0 PB Value 2 Chroma 4
Gloss Average: 23.89
Viscosity Range: 400-1000 CPS
CIE L*a*b* Values: L*24.36 a*12.28 b*-25.74
Tint Strength: 79.94
