This product is a beautiful lamp work marble artist-signed marble featuring patriot colors, measuring 31/32 inches. It is a machine-made marble with a swirl style, suitable for ages 17 and up. The intricate design and vibrant colors make it a unique and eye-catching addition to any collection of marbles or toys & hobbies. The Marble is signed EM99/32, I believe it to be from Ed Mauger. It measures almost an inch in diameter and has a unique design.