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Spectrum Glaze Crystals are a great way to customize and create crystal look on your pots fired from Cone 06 to Cone 6. Lead free and dinnerware safe when fired to a minimum of Cone 06, Spectrum Glaze Crystals allow you to mix crystals into your glaze or place them on your piece as you want to.
Try 2 or more colors to create a unique effect. The Blue, Green, and Brown crystals are reactive with the base glaze you use, making for something fun and different each time.
Glaze crystals are available in 1 oz jars every day and 4 oz jars by special order. Due to varying expansion coefficients, some crystals may cause crazing with some glazes, particularly at Cone 5/6.