Gillespie Borate

Gillespie Borate is a blended borate mineral used in ceramics, serving as a replacement for Gerstley Borate on a pound-for-pound basis.

Fluxing Agent: Improves glaze consistency, fluxing at low and mid-range temperatures, while enhancing surface smoothness.

Source of Boron: Provides a consistent source of boron, resulting in fewer impurities, brighter colors, and reduced issues like crawling and pinholes.

Serving as a replacement for Gerstley Borate on a pound-for-pound basis.

Sold in 50lb bags. The price above is price per 50lb bag. Enter the number of bags. Quantity break pricing will be applied at checkout.
1 bag= 50lbs, 2 bags= 100lbs, 4 bags= 200lbs

If purchasing 200lb+, call (405) 510-0076 or email office@mammothclay.com to order.