Toy Glass Marbles ~5/8-Inch are sold in lots of 7 ounces, which is approximately 30 "player size" marbles for use in mosaic art projects.
T-Rex
Marble Genius Marble Run Starter Set STEM Toy for Kids Ages 4-12 - 130
How It's Made: Glass Marbles
Home - House of Marbles US
14mm Natural Earth Blue Glass Marbles Hand Applied Artglass Choice: Pk 5 or One Marble Transparent W Geographical Continents Recycled Crafs
Assorted Traditional Marbles, Hobby Lobby
Large 5/8 Inch glass marbles lot 175 Count
COME IN BULK - You will get 115PCS 5/8 glass marbles in 6 different colors (20PCS per color, except for sky blue ones, only 15PCS), meeting your
POPLAY 115PCS Colorful Glass Marbles, 5/8 Inch Marbles Bulk Cat Eyes Marbles for Marble Games Vase Fillers
Glass - Mosaic Art Supply
50 Mixed Target Marbles 5/8 16mm Diameter