White White stones are receptive and ruled by the Moon. As such they are intimately linked with sleep and psychism. In the past, white stones, especially chalcedony, were worn to promote lactation by mothers having trouble feeding their babies. In contemporary America, these are considered to be lucky stones, often carried in the pocket or worn to promote good fortune. Because the Moon glows at night, Her stones are used for protection after dark, often when walking alone in hazardous places. Sometimes white and red stones are carried or worn together for protection at all hours. To be rid of a headache, carry a white stone in your pocket. Some workers say that white stones, because they contain all colours, can be magickally charged to act as substitutes for stones of any colour. This is done through visualization.
[Encyclopedia of Crystal, Gem, and Metal Magic-Scott Cunningham]