Espiral 1:
https://www.1stdibs.com/furniture/rugs-carpets/north-south-american/espiral-1-large-rug-juliana-vasconcellos-matheus-barreto/id-f_14636582/?epik=dj0yJnU9VjhYYmtETE5SY2huelgzZy1wZEVkWEVWS05BbUhmMjImcD0wJm49a2l1cV9aTGhQUmNEODk5dWNGaHNVZyZ0PUFBQUFBR053aWs0 

Espiral 2:
https://www.1stdibs.com/furniture/rugs-carpets/north-south-american/espiral-2-large-rug-juliana-vasconcellos-matheus-barreto/id-f_15359652/ 

Vray|Corona

Turbosmooth open

Those who work in V-Ray versions lower than 3.1, be careful, in the materials in the BRDF section there is Microfaset GTR ( GGX ), if your version is older than 3.1, then the BRDF field will be empty. Choose Blinn, Phong or Ward - whichever suits you best

For Corona render, it is recommended to install a version of at least 1.5, since the glossiness of materials is configured taking into account PBR