The model is made by geometry. There is a 1x1 meter piece in the scene.

The model is made for smoothing. There are 0 iterations in the scene on the Turbosmooth modifier, when rendering: 2. The pivot is at the bottom, in the lower left corner.

The radiance of pure style.

Fashionable accent mosaic Goose Feet 53 mm in size from the Mare Alta Ceramic boutique factory. The Goose feet or polylined cage ornament,
usually used in textiles and representing repeatedly repeated symmetrical rows of polylines or abstract polygons.

The favorite ornament of the fashion designer Christian Dior.

https://www.livemaster.ru/item/49434754-dlya-doma-i-interera-plitka-mozaika-gusinye-lapki 

V-Ray version: 3.5. Who works in V-Ray versions lower than 3.1 be careful, in the materials in the BRDF section there is a Microfaset GTR ( GGX ), if your version is older than 3.1, then the BRDF field will be empty. Choose Blinn, Phong or Ward – which is preferable for you.

Corona version: 5.For Corona render, it is recommended to install a version not lower than 1.5, since the glossiness of materials is configured with PBR in mind.