Facts : 1 In Russian pyramid there are sixteen balls, as in pool, but fifteen are white and numbered, and the cue ball is usually red
Facts : 2 In Kaisa, five balls are used: the yellow object ball (called the kaisa in Finnish), two red object balls, and the two white cue balls (usually differentiated by one cue ball having a dot or other marking on it and each of which serves as an object ball for the opponent)
Facts : 3 English billiard balls are the same size as snooker balls and come in sets of three balls (two cue balls and a red, an object ball)
Facts : 4 Billiard balls have been made from many different materials since the start of the game, including clay, bakelite, celluloid, crystallite, ivory, plastic, steel and wood
Facts : 5 The search for a substitute for ivory use was not for environmental concerns but based on economic motivation and fear of danger for elephant hunters
Facts : 6 It was in part spurred on by a New York billiard table manufacturer who announced a prize of $ 10,000 for a substitute material
Facts : 7 The first viable substitute was celluloid, invented by John Wesley Hyatt in 1868, but the material was volatile, sometimes exploding during manufacture and was highly flammable
