TARN GROS GRAIN GRANITETarn Gros Grain Granite comes with a medium coarse grained white to white grey Granite with a speckled look. Due to geological formation, black mineral concentrations can appear at times. Surfaces made out of it are heat resistant, and they not only look good but are durable too. It is a porous stone; therefore, proper sealing is recommended to avoid the problem of staining or absorption of liquids on Black Marble or White Marble worktops. The