The porto beige limestone that flows through the house continues up the Gemmell-designed staircase with sapele mahogany stringers and railings, supported by stainless-steel balustrades with tempered-glass panels. The reverse acrylic painting on glass by Gemmell is entitled Aro. Bertjan Pot’s Random Light filigreed Fiberglas fixtures at the top of the landing are from Design Within Reach and create a spider web of light at night. The glass railing is by Sorrento Glass & Mirror in San Diego.