Granite Shield sealer is available for an additional charge to be applied to any stone surface, whether or not you purchase your stone from Ricon or not, it can also be very effective on stone that has already been in your home for years. On all but 2 colors of Granite Countertops it protects 100% from any Stains and is 100% Maintenance free. Absolute Black and Blue Bahia are two granites that are known as "calcite based stones", which makes it similar to Marble, Travertine, and Limestone, in that, it can be Etched by any acidic liquids, drinking alcohol and liquids with harsh abrasives in them such as some everyday house hold cleaners and soaps. This also means that for those stones, they can be stained by a liquid that has both color and etching ability. This is not covered in the warranty. There is no product on the market that can prevent those two granites, marble, travertine, and limestone from being etched. This should be considered very carefully before deciding to use these stones, expecially for a kitchen. We will proudly install them for you, but you should be aware that they can be damaged no matter what we do to protect them. With that being said, the Granite Shield still helps with this concern because it does protect against all of the other multitude of things that make those stones very easy to damage. For more detailed information on this please go to www.graniteshield.com or call Jason at 225-317-2622