The vessel sink is a fairly new arrival on the bathroom scene and creates a unique vanity. This sink sits atop a countertop that is often fastened to a floor-mounted vanity base, which, like most all vanities, is fastened to the wall for stability. Vessel sinks require a non-standard faucet and waste-drain system and are used in new construction or major bathroom renovations. The faucets for these sinks are either deck mounted on a pedestal or are wall-mounted.
The sink, as the name suggests, is simply a vessel into which a faucet pours water. The vessel becomes an art object of sorts and can range from a porcelain china bowl or granite or alabaster stone or blown art glass. The design options are essentially unlimited, and the nice thing is you can have a very striking and custom-looking piece for a reasonable amount of money. Plumbing waste and supply lines are either concealed in the vanity base or exposed, but, if exposed, they are designed to visible and attractive.
Elaborate designer vanity cabinets are available for these sinks, but some homeowners exercise their creativity by converting antique dressers or side tables into wonderful bases for vessel sinks.
Source: The Spruce