Mukund;
It's likely that your marble is resin backed. If I remember Giallo Riale, it's a lot like the "Brechia" family of stones from Italy that require a fiberglass backing adhered to the stone with resin to prevent the stone from cracking during otherwise normal handling. Not much will stick to these tiles other than a product like this:
http://custombuildingproducts.com/Pr...er=pro&lang=en
Although pricey, this product will work very well. Let me know if you'd like more info, or need help locating a distributor that carries this product.