Inorganic – This name was given by English manufacturers to Smalt, a Cobalt-based pigment that was used in the 16th -17th centuries as a less expensive alternative to Lapis Lazuli. Unfortunately, Smalt was prone to fade into a light grey, as some Veronese skies demonstrate. But the introduction of Ultramarine Blue made the original Smalt formula obsolete, and so I offer a completely reliable substitute blend that evokes the aerial effects of the great Venetian decorators.
| Colour Index | PB29, PW6 |
| Drying | Average |
| Transparency | Opaque |
| Lightfastness | Excellent |
| Oil Content | Low |
| Tint Power | Average |
| Toxicity | Non-Toxic |
