A rare 18th century “Bleu Belge” marble sink, carved from a single block of charcoal-black “Bleu Belge” marble with distinctive white veining. The rectangular sink features rounded front corners, a moulded upper rim, and finely chisel-finished exterior surfaces. The interior is smoothly worked with a gentle fall to the rear drain hole, ensuring excellent functionality. Some light wear consistent with age and use. In exceptional condition, structurally sound and fully watertight, with no cracks or losses.