Marble Art installed sand stone flooring in my home ($40 per sq. ft.).
I dealt primarily with one of the owners, Marizio Grande. He is very professional and knowledgeable and has exclusive access to some very fine sand stone - not to mention a warehouse full of fine granite and other stone to choose from!. Viewing the granite and marble, etc.. in his warehouse is like going to an art galary.
I found this company to be VERY expensive but I must say the workmanship ( and actual product) was outstanding. It is annoying that this company does not do any plumbing or preparing of floors or counter tops for installation. It is up to the homeowner to hire other trades and co-ordinate this.
PS. I found the rating a bit difficult because the quality would certainly be up to expectations regarding "recommending to my mother" but she would find it difficult dealing with other trades and then she would "pass out' when she saw the price:-)