Description
Elevate your studio glazes with our high-grade Colemanite (Gerstley Borate), a natural hydrated calcium borate 2CaO-3B2O3-5H2O prized by ceramic artists for its unique melting behavior and reactive color potential. Appearing as a light grey powder, this versatile raw material acts as a powerful low-temperature flux, bringing down the melting point of glaze formulations while introducing rich surface depth.
Key Features & Technical Benefits:
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Powerful Low-Temperature Flux: Introduces soluble boron and calcium to lower the glaze melting point, promoting a smooth, fluid melt across mid-range and low-fire temperatures.
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Color Oxide Intensifier: Enhances and brightens colorants like copper, cobalt, iron, and rutile, producing vibrant hues that stand out.
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Craze Resistance: Helps balance thermal expansion in glaze recipes to reduce fine cracking (crazing) on fit-sensitive clay bodies.
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Dynamic Variegation: Promotes natural mottling, fluid movement, and optical effects in glazes, turning flat colors into rich, complex surfaces.
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