How about something serious. Do you have any idea of the work it takes to keep the value of diamonds up? Diamonds are controled by one group in South Africa. These "dealers" advertise, mine, cut, and hold back diamonds to control the market.
Gambling chips are not diamonds. We as collectors control the market. Mistakes are made, both by the collector and the dealer. The internet offers an explosion of information. Knowledge is the key for the dealer and the dealer.
Good Luck to all.