November 18, 2015
Up until the past few centuries, the colors that artists used were limited to those made from earth and mineral pigments. Pigments were made from bugs, plants, animals and animal waste, mollusks and the ink from squids, and many other natural sources. Some colors were made from materials that were so rare that they were extremely expensive and therefore used only sparingly. Examples include Ultramarine Blue, which was made from lapis lazuli, and Tyrian Purple, which was made from the mucus of a snail.