Louis Mian offers a full line of stone care products to clean and protect your natural stone investments:

Simple Green stone cleaner: A non-toxic, non-abrasive safe alternative to hazardous cleaning products. Safe for use on marble, granite, travertine, limestone, porcelain, ceramic, and engineered stone products such as Caesarstone and Silestone.
 Spray Bottle (32 oz.): $8.95

TSI200 Sealer: an economical all purpose stone sealer for use on all types and finishes of natural stones. This sealer is appropriate for use on countertops, flooring and any other stone surface. TSI 200 is a silicone impregnating sealer that is easily applied.
8 oz. bottle: $9.95
1 Gallon : $85.00

Safestone Sealer: an all purpose sealer for use on all finished on marble, granite, travertine, limestone and slate. This sealer protects against the rigors of everyday use and is specifically recommended for marbles and other more porous materials. It is our strongest protective sealer.
1 Liter bottle: $37.95
 
Renova Sealer: a color enhancing sealer recommended for use on honed and antiqued (brushed) surfaces. This sealer will deepen the color of the material, creating a rich and vibrant look on honed and brushed surfaces. Also protects against rigors of everyday use on countertops.
1 Liter Bottle: $68.00

Epoque Sealer: a relatively permanent color enhancing sealer recommended for use on honed and antiqued (brushed) surfaces. Like Renova, this sealer will deepen the color of the material, creating a rich and vibrant look on honed and brushed surfaces while protecting the stone. The difference is that this sealer is relatively permanent and will only need to be re-applied every few years. Once it is applied to the stone, it can not be removed so just be sure that you want that darker, enhanced look before applying.
1 Liter Bottle: $76.00