Slab. The horizontal base stone covering the concrete base for fixing the headstone, memorial or tablet to. Headstone. The main vertical engraved component fastened to the slab. Memorial / tablet. To be of stone, marble or similar material, bearing a commemorative design or inscription. This is to be securely fastened to the slab. Vases / flower containers. Can be of china, porcelain, pottery or similar non plastic material.