This is a very beautiful colour, made from an out of production pigment, Wallace Seymour have managed to obtain a limited amount of this pigment to produce this beautiful and unique hue.
It is a cobalt-cerulean pigment containing real silver and it is the most lush muted blue in masstone. There are greenish undertones in there but subtle and it is markedly a blue, like a lower chroma, higher value, Cerulean blue.
It exhibits the transparency of a cobalt pigment however for me where it really shines is in the tints when mixed with white, luminous sky blues with a gentle turquoise edge.
It is a relatively gentle tinter and works really well 'wet into wet' I have just used it on the horizon of a landscape and to provide atmospheric perspective it is excellent!
The bottom line is this is a stunning colour, unavailable anywhere else, with no comparable substitute and from a highly limited supply.
Pigment - Single Pigment, A Praseodymium, Cobalt, Zinc, Sliver matrix
Opacity - Semi-Transparent
Binder - Linseed Oil
Drying Time - Moderate/Fast