For production, all kinds of stone should be used: agate, onyx, granite, marble, oligoclazitis, and others. The extracted stone is brought to production by so -called huge monoliths. The most famous stone suppliers are: India, Greece, Italy, Russian Federation, Turkey, Panama. Marble window sills are made in Russia itself. It happens quite often that a single breed may occur different tones or colors. In this regard, before ordering a window sill, you should immediately decide on the right shade of the goods. The best thing to go to the company’s warehouse and find the desired slab, from which it is your windowsill that a little later will make. Among other things, special attention should be paid to the number of located veins in the structure of the stone itself, the less their number is, the higher the risk of cracking in the future.