Yellow Clay Bole for use in water gilding techniques. Use over traditional chalk gesso ground. Traditionally Yellow Bole is used under yellow gold in order to enhance the color of the gold. Bole needs to be applied with a solution of rabbit skin glue. This Bole is manufactured by Sinopia. The formula was developed by working with master gilders to craft a rich creamy bole that burnishes to a beautiful highly reflective luster.