Mar 06, 2017u00a0u00b7 thereu2019s a new cadmium-free paint alternative for artists. the cadmium-free pigment was developed after three years of research and development. ... intense pigments in hues of red, yellow, and ... Schmincke cadmium red deep (pr108) as i mentioned above, this was a hard choice. i adore da vinci cadmium red deep which is a gorgeously rich blood red, but i finally decided to give this spot to schminckeu2019s version which is the darkest cadmium red that iu2019ve found. my scan doesnu2019t do this beautiful color justice. Cadmium red pigment is cadmium zinc sulfoselenide (cds, cdse) produced by co-precipitating and calcining, at high temperature, a mixture of cadmium sulfide and selenide sulfide in varied ratios forming a partially crystalline structure with sometimes hexagonal or cubic forms. cadmium pigments are the most durable yellow, orange and red inorganic pigments commercially available.