Antique Black Marble Corbel Fireplace Mantel with Fossil Inclusions. Offered by Schermerhorn Antique Fireplaces This elegant 19th-century black marble fireplace mantel is a sophisticated and timeless piece, crafted with clean architectural lines and understated corbel detailing. Carved from richly toned black marble, the surface reveals naturally embedded small fossils, giving the mantle a subtle organic character that collectors and designers...