Red Oak's heartwood resembles other oaks with a biscuit to pink colour, but has a reddish tinge. Mostly straight grained and coarse textured, with a less attractive figure than white oak due to smaller rays. Southern red oak has a more rapid growth than northern red oak and is harder, heavier and coarser textured. Weight about 770 kg/m³ (48 lb/ft³); specific gravity .77.