At 25 mm in diameter, these lovely shooter marbles are individually hand-crafted from art glass. Each one features a unique blend of purple, blue & green colors, accented with swirls of black that run through the marbles. This set includes: 3 Sonata Pattern Glass Marbles, each measuring approx .98 inches in diameter (25mm). 3 Stainless Steel, Ring Style Marble Stands for display of your marbles. Hand crafted marbles will exhibit a “pontil” mark where the marble was attached to the “punt” during the creative process. Each hand made marble may display a "punt" or "pontil" mark that indicates it is an individually crafted art glass marble blown freehand. This small mark is an indication of the individually crafted art glass manufacturing process, it is not a flaw or damage. Because each one is handmade, no two marbles of a given pattern will be exactly the same.