Ronak International Marble & Natural Stone. Ronak International is a professionally managed organization engaged in the production of a variety of stone products in various sizes and finishes. Our range of natural stone and natural building stones includes Granites, Marbles, Sandstone, Slate, Limestone, Stone products. We source different stones directly from quarries and process them at our factory in various finishes like natural, honed, polished, calibrated, brushed, sandblasted and tumbled in hand cut or machine cut edges. We have a team of experienced professionals looking after processing, dressing, inspecting and shipment of these natural building stones.