The ring drop swindle was a popular confidence trick employed by criminals in Victorian London. In the swindle, a stranger makes a show of picking up a diamond ring from the floor close by to the victim. The confidence trickster then offers to sell the valuable diamond ring to the victim for a fraction of its obvious worth, on the pretext that he is far too busy to seek a more lucrative market. Naturally the ring was not found, but rather dropped deliberately by the confidence trickster, and is worth far less than the money extracted from the victim, who in fairness is swindled in part by his own greed. Research Ring Drop
 
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