This special bole forms an icy turquoise blue substrate for any sort of water gilding project. Perfect to offset silver and white gold, but will work with any color of gold leaf. Bole Clay for use in water gilding techniques. 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.