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 Marbles were originally made by hand.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
The Marbles (quartet) Shapiro and Dowler went on to become members of Paul Fauerso's The Loading Zone. The Marbles (quartet) The Marbles were an American rock band active in San Francisco from 1965 to 1966. The Marbles had the following members: Peter Shapiro on lead guitar, Steve Dowler on rhythm guitar, David Dugdale on bass and Ray Greenleaf on drums. The Marbles were a psychedelic and rock group whose most notable performances were at the Tribute to Dr. Strange at the Longshoremen's Hall in San Francisco on October 15, 1965, and again at the same venue for The Trips Festival on January 21,