1998, Joanna Cole, Stephanie Calmenson, Michael Street, Marbles: 101 ways to playLustered (also called lusters, rainbows, oilies, and pearls)
2001, Paul Webley, The economic psychology of everyday life (page 39)But marbles are not only used to play games: they are also traded. In this market, the value of the different kinds of marbles (oilies, emperors, etc.) is determined by local supply and demand and not by the price of the marbles ...