Alchemy Glow, from Alchemy Glass & Light, illuminates glass sinks from within via an LED fixture embedded into a routed channel under the countertop. The low-voltage LED system provides an estimated 50,000-hour lifespan, which equates to roughly 20 years. It can be installed with any round glass Alchemy sink, and the company offers a package that includes the LED unit, a custom-fabricated honed French limestone countertop (with cutout and hidden LED light channel), an Alchemy sink (in either a 15" or 18" diameter), and a sink clip kit. Custom stones can be ordered to fit any vanity.