Marble (toy) conventions. Additionally, many glass artisans produce art marbles for the collectors' market only, with some selling for thousands of dollars. Marbles are made using many techniques. They can be categorized into two general types: hand-made and machine-made. Marbles were originally made by hand. Stone or ivory marbles can be fashioned by grinding. Clay, pottery, ceramic, or porcelain marbles can be made by rolling the material into a ball, and then letting dry, or firing, and then can be left natural, painted, or glazed. Clay marbles, also known as "crock marbles" or "commies" ("common"), are made of slightly porous clay, traditionally
Marbles Kids Museum Marbles Kids Museum Marbles Kids Museum is a nonprofit children's museum located in downtown Raleigh, North Carolina in the Moore Square Historic District. Marbles was founded in 2007 as a result of the merger between Exploris, an interactive global learning center, and Playspace, a children's museum aimed at preschool through early elementary age children. Marbles mission is to "..spark imagination, discovery and learning through play." Marbles has several permanent, play-based exhibits that align with five core initiatives - Ready Set Learn, Be Healthy Be Active, Create Innovate, Explore Experiment and Connect. As of late 2017, museum admission is $7 per