In a Manhattan apartment designed by Grade, an Untitled Pierre Soulages artwork from Levy Gorvy gallery is displayed over the marble fireplace; the armchairs are by Pierre Yovanovitch, the custom cocktail table is by Mathieu Lehanneur, and the side tables are by Eric Schmitt and Mattia Bonetti.

The wavelike surface of the Mathieu Lehanneur cocktail table bounces light around the living room that features a custom sofa, Liaigre Inca table, and Eric Schmitt floor lamp.

In the foyer, a Richard Prince “Joke” painting, Georges Jouve ceramic plate, and Mathieu Lehanneur Spring lamp animate a console that’s flanked by side chairs from Ralph Pucci.

Loro Piana cashmere covers the walls in the study where George Condo’s Linear Portrait (2019) has pride of place.

Art by Louise Nevelson (left) and Bosco Sodi artwork adds texture to the main bedroom where Grade designed the custom bed and nightstands.

Honed Carrara marble envelopes the main bath where a freestanding tub is paired with gunmetal black fixtures by Piet Boon for Cocoon.

In the library, a Barnaby Barford work overlooks a bold collection of collectible design, including a Reynold Rodriguez K chair, Mathieu Lehanneur Inverted Gravity cocktail table topped with Katherine Glenday vessels, and Dune sofa upholstered in Loro Piana cashmere.

A bold George Condo adds a pop of color to the dining room, where a custom marble table is topped by a Bernar Venet sculpture and Eric Schmitt pendant light.

A black-and-white Brent Wadden work is displayed in the dining room that features an Eric Schmitt pendant, custom marble table, Warren Platner dining chairs, Bernar Venet sculpture, and Hala Matta ceramic plate from R & Company.

White Abyss (2006-2007) by Pat Steir is featured in the Grade-designed living room.

An art-filled guest bedroom features a work by Matthew Caughy and Zane Jones over the custom bed while the dresser, designed by Grade, is surmounted by a series of Idris Kahn prints from Sean Kelly Gallery.

The apartment’s black-and-white palette extends to the terrace that offers sweeping views of lower Manhattan.