Toronto police are investigating what they call a "diamond fraud" valued at about $1 million.
They say a 61-year-old man had invested in a large number of loose, coloured diamonds, and made arrangements to sell them.
Investigators say he met up with the buyer at a local restaurant, and the buyer claimed to be a doctor.
They say the diamonds were exchanged for a cheque, which turned out to be fraudulent.
Police are asking anyone with information to come forward.
