Marble (toy) individual artists such as Josh Simpson. Art marbles are usually around 50mm marble (a size also known as a "toe breaker"), but can vary, depending on the artist and the print. Marble (toy) A marble is a small spherical toy often made from glass, clay, steel, plastic or agate. These balls vary in size. Most commonly, they are about in diameter, but they may range from less than to over , while some art glass marbles for display purposes are over wide. Marbles can be used for a variety of games called marbles. They are often collected, both for nostalgia
Elgin Marbles until the mid-20th century and have suffered irreparable damage by previous cleaning methods employed by British Museum staff. As early as 1838, scientist Michael Faraday was asked to provide a solution to the problem of the deteriorating surface of the marbles. The outcome is described in the following excerpt from the letter he sent to Henry Milman, a commissioner for the National Gallery. The marbles generally were very dirty ... from a deposit of dust and soot. ... I found the body of the marble beneath the surface white. ... The application of water, applied by a sponge or soft