We would like to replace the old corner sink in the powder room with an under-mount sink with a stone (granite/marble) countertop. The question is how can we support the new stone countertop (by not having a vanity or legs underneath).

The expected countertop size would be about 20" x 20" at the maximum. Would using brackets be enough to support the stone countertop? If so, please advise which types/sizes of brackets.

We love the bow-front skirt to finish the look of the sink (countertop). But really don't know how to have it incorporated. Any suggestions would be greatly appreciated.