Rublev malachite, from Natural Pigments, is shown on the left. Zecchi malachite scuro (dark), from Zecchi's Art Supply in Florence, Italy is on the right. Both dry pigments are ground in linseed oil. I have been hoarding the Zecchi color since I bought it in Florence in 2003. It is darker and richer than most other products and was invaluable in … [Read more...] about Rublev and Zecchi Walked into a Bar….