Maybe you will get lucky and someone will come by with an answer for this question, but it's an extremely specialized question to post on a general gardening forum with readership around the world, but concentrated in North America. Few of us would be able to help you. You would be better off to find local places to ask, on or off line.
In the meantime, do you want to relieve our curiosity about what someone would be doing with 14 tons of granite chips that need to be a specific size and color? (Making a garden path a mile long? inorganic mulch for two acres of flower beds?