Riga Blue is a polished glazed porcelain tile in 60x60 CM with a marble look: a bright white ground crossed by soft blue-grey veining that gathers into a broad, crackled band running diagonally across the face. It belongs to the Riga collection, which also comes in 60x120 CM and in the colours Riga Gold and Riga White. The polished surface has a glossiness of > 92 GU (gloss meter 60°). Water absorption is < 0.05% (ISO-10545-3), breaking strength is > 1800 N (ISO-10545-4) and surface scratch hardness is 5 on the Mohs scale (EN 101). Stain resistance is Class 5 (ISO-10545-14), and the reaction to fire class is Class A1 - A1 fl.