a diamond out of the blue

?It is a known fact that if you take a diamond out of the blue and you give it to any expert, they cannot tell where the goddamned thing came from. You take a diamond that?s been cut and polished and there?s no human being on earth who can tell with certainty where that stone came from.?

?Tom Shane, owner of jewelry retailer The Shane Company, as quoted in Blood Diamonds: Tracing the Deadly Path of the World?s Most Precious Stones, by Greg Campbell, 2002.