Brown marble (like Emperador) is a compacted marine limestone, calcite-based, Mohs 3, with a filled, polished surface. Brown travertine (like Noce Travertine) formed from hot spring deposits — it has a characteristic porous, layered structure with visible holes that can be left open for a rustic look or filled with resin for a smooth surface. Brown granite is an igneous rock — crystallised from magma — containing quartz, feldspar, and biotite mica, with Mohs hardness 6–7 and virtually zero porosity. For kitchen worktops, brown granite is the most durable. For bathroom walls and floors, Emperador gives a warmer, richer character. Travertine suits both traditional and contemporary spaces, particularly floors and feature walls where its texture adds depth.