Size is as-packaged, or the diameter of loose marbles. ("D" is the diameter of round items other than marbles.)
This popular design is a landofmarbles.com exclusive - it's the classic pirate flag, also known as the 'Jolly Roger.' It features a skull and crossed bones on a field of jet black. The design is a glass decal permanently fired into the black marble - it will never rub off! Also available printed on a black pearl!!