We've named this pigment Cinnabar Red, as a (non-toxic!) nod to the use of this colour in antiquity. While our Cinnabar Red pigment is synthetic and non-toxic, its namesake was made from the toxic mineral cinnibarite - a brick red to scarlet form of mercury associated with volcanic activity and hot springs. Developed in France, this pigment is also known as port red, and was initially a reproduction of red lithol, a colour loved by the artist Mark Rothko, but with better light hold. This pigment does not contain mercury. It is a modern, non-toxic synthetic pigment, composed of 95% natural ingredients. 50g pigment in 110ml jar Origin: France Chemical name: Mixture of natural iron oxides and organic pigments Color Index: R170-R122 Bulk density: 1340 g/l UV resistance: Average Colouring power: Very good