Psephomancy
Psephomancy is the art of divining with pebbles. Mark beans or pebbles with signs or colour to indicate your different choices, place them in a drawstring bag and shake them up. Either toss them all out and interpret the manner in which they fall or randomly draw them out, as a response to your query.
Taken from The Element Encyclopedia Of 5000 Spells
By Judika Illes