Historically Smalt loses color over time

Colour index: PG23

2Tint Strength: 96

Pigment Classification: Synthetic OrganicColor Index Name: PO43Color Index Number: 71105Chemical Description: Perinone OrangeOpacity/Transparency: Semi-OpaqueLightfastness Rating: 1Permanence: ExcellentMunsell Notation Listing: Hue 10

One is reminded of Sassetta's landscapes or Renaissance illuminated manuscripts

ultramarine violet vallejo akrylmaling Montserrat Orange Historically Smalt loses color overColour: Ultramarine VioletPermanence: AAOpacity: Semi transparentPigment: PV15Pigmentdescription: Silicate of Sodium and AluminumASTMRating Ligthfastness: IPigment classification: Synthetic inorganicColorIndex Number: 77007Viscosityrange (mPa. s): 800 1. 500 Colour IndexThe pigments used for artists' colours are inorganic as well as organic. The inorganic pigments have been used since antiquity; most of them are extracted from minerals and soil, such