Marble procedural texture can be found here:
A demo can be found here: https://www.babylonjs-playground.com/#HS1SK -
This texture has 4 parameters :
var marbleMaterial = new BABYLON.StandardMaterial("torus", scene);
var marbleTexture = new BABYLON.MarbleProceduralTexture("marble", 512, scene);
marbleTexture.numberOfBricksHeight = 5;
marbleTexture.numberOfBricksWidth = 5;
marbleMaterial.ambientTexture = marbleTexture;