A type of feldspar for added strength during burning, rich in free silica. Main base flux material in high temperature glaze.Chemical formula: NaK2OAl2O38SiO2A quantity of 1 kilo. Cornish StoneSKU: קורניש סטון₪33.00PriceExcluding VAT | משלוח או איסוף עצמיQuantity*Add to CartBuy Now