Murano Swirl rug in two materials. https://carpetedition.com/en/collezione/collections-en/hand-made-en/murano-swirl-en/ 

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

The displacement modifiers are used for the carpet material.
All elements and materials have logical names.