A new trend in countertop appears to be natural stone that is back-lit to show off its translucent value.
Onyx, White Quartz, Agate, and Hematite all look beautiful when illuminated by commercial LED lighting, with the transformer hidden from view.
But beware - there's a price to pay for this gorgeous look. It is not for those on a tight budget.

Translucent dyed blue agate stones.

Backlit Onyx bar at Nobu Paris.