A Tucson man reported that he was defrauded of several hundred dollars by a woman who claimed he was playing a game authorized by the gem show.
Tucson Gem and Mineral Show organizers are not sponsoring any games of chance at any off site location, said Officer Brandon Tatum, a Tucson Police Department spokesman.
Police warn the public to remain skeptical about possible fraud schemes.
On Feb. 4, a man reported to police that he was approached by a woman at a Chevron station while he was pumping gasoline into his vehicle.
The woman told the man that he had won points in a game by pumping gas at that station, and that the game was authorized by the gem show, Tatum said.
The man then was shown a game in the back of a white trailer parked alongside the gas station. The woman said the game was "Race Way to Bluff" and the man was given marbles to roll into a box with various holes at the bottom of the box.
Depending on where the marbles landed, the man was awarded a value that corresponded to points on a chart, said Tatum.
If the man accumulated more than 100 points, he was told that he would win the game and the prize money wagered up to that point, said Tatum.
The man did not win and learned later through doing research online regarding a similar game that he had no chance of winning.
Police believe that the woman who defrauded the victim has left Tucson.