A single round-shaped onyx sink basin. This carved vessel sink, created from a single onyx rock, has been carved and then polished, giving it a smooth finish about the interior basin, and the exterior of the sink. Onyx has a lovely sparking effect due to the crystallization within the stone. The colors are primarily white and grey. The sink has been drilled for US plumbing. This smoothly polished onyx sink would be a beautiful way to add a bit of character and elegance to bathroom or powder room. Perfect for Vanity. Drilled for US Plumbing.