HALF TRAVERTINE table in two finishes https://maamihome.com/en/product/maami-home/living/side-tables/half-travertine 

IMPORTANT:
!Corona requires a version no lower than Corona renderer 7 because corona physical mtl is used
!For Vray older than version 3.1 in the materials, you need to change the BRDF type to any preferred

Displacement modifiers are used for the travertine material (this modifier contains a standard OSL shader for procedural generation of bubbles and cracks)

All elements and materials have logical names. Also thrown turbosmooth