Sinopia’s Red Clay Bole is for use in water gilding techniques. Red Clay Bole is considered the standard color for applying gold leaf. Gold Leaf is pounded to a one micron thickness and therefore the color beneath the gold reads through leaf. Red Bole warms up yellow gold and creates deep rich red voids between the leaf. Use over traditional chalk gesso ground. 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.