Translucent solid surface:
http://www2.dupont.com/Surfaces_Commercial/en_US/design_inspiration/translucency.html
http://www.lgsurfaces.com/LGLucentApplications.html
Concrete Countertops: http://www.quikrete.com, http://www.surecretedesign.com
Countertop lighting: http://www.ledinc.com