Oceanic stone is a unique marble with thousands of 50 million years old fossils embedded within. Specimen visible in the stone vary in size from less than half an inch to over two inches long, while Jet Black marble is a metamorphic rock formed when limestone is transformed under extreme pressure. Jet black is softer and more brittle than granite, it is considered a luxury material prized for its distinctive look. Our skillful artisan has beautifully crafted each chess piece with special care and attention and make a stunning combination of Oceanic and Black marble to meet the taste of chess lovers. Every chess board has black velvet felt on its back side to protect the surface of furniture.