*** FREEZE POLICY: Please be mindful of your local weather conditions before placing your order, as extreme cold can cause damage to clay and glazes. ***
Your cart is currently empty
Product image slideshow Items
This is the most common source of calcium in glazes. It is a high temperature flux that gives durability and hardness to glazes. 98.0% CaCO3 with 1% retained on a 325 mesh sieve.