Any time we install a granite top or any stone product...we go with the customer and have them buy it on the spot if they approve of the actual pieces in front of them. Then we take digital pictures of the slabs and the granite company does its work from there.
Stone is all different, it may have a tint or grain running through you dont care for.
Always look at what you are buying....
You would not buy a red car without seeing it first...it could be pink.