A story of blue
15:15
Why Is Blue Rare?
8:05
The Story of Ultramarine from the Silk Road to Renoir: The Chemistry of Colour | National Gallery
3:04
Reconstructing Historical Methods of Making Oil Paint
5:19
The Rarest Pigment in the World | Colour the Spectrum of Science | BBC Earth Science
18:09
In Search of Forgotten Colours - Sachio Yoshioka and the Art of Natural Dyeing
12:05
Vivianite pigment - the blue ocher
12:31
Lapis Lazuli from rock to powder
17:46