Typical marbles can be easy to find but a set like these handmade green glass marbles with unique black colored spots are one of a kind and truly wonderful. They are 16mm inch in size and can be bought at economical prices. The quality of glass is used is also exceptional so you will have no complaints using them. The best feature of purchasing from McGills warehouse is that if you buy their gems or marbles in bulk will get you free shipping. If a buyer lives in any region of the United States, they can also avail free shipping on their purchase.