Why choose Gem Marble & Granite Corp? Because we're pioneers of the industry. As a wholesale company, we are loyal to our dealers and strive on customer service. With the largest selection of slab display on Long Island, and the best fabricating machines in the industry we have the capabilities of producing with the highest attention to detail. For additional information about us, and how we can satisfy your needs, please don’t hesitate to pick up the phone and give us a call today.