Deep water at night: navy gone almost black, the current visible only in how it moves. Long diagonal ridges sweep across the floor, breaking near one corner into something tighter, as if a current met an unexpected rock.

• Carved diagonal ridges: surfacing only when light crosses at an angle
• Deep navy wool: almost black
• Agitated corner detail: a tighter pattern breaking the flow
• Hand-tufted in Jodhpur: carved rather than dyed
• Best placed: beneath a pale oak bench, under a Georgian cornice or concrete ceiling