Fig. 2From: Laser-based techniques for the non-invasive characterisation of grisaille paints on stained-glass windowsCompositional types of glasses throughout different sample’s chronologies. (K-rich = potash-rich silicate glass, HLLA = high-lime low-alkali glass, Na-rich = soda-rich silicate glass, Na-Ca = soda-lime silicate glass)Back to article page