CBS Dichroic extract is a pure form of our high quality coatings literally extracted off of the glass and preserved in a glass container. This bottle contains 1/8 sheet of Dichroic extract. As there is no COE associated with the Dichroic Extract, it can be used much like a gold-flake or powder, this product is used in flame-working, glass blowing, fusing, stippling, painting and various other artistic methods.