In other words, a gold bar was filled with a much cheaper metal to defraud buyers. An ounce of gold is worth $1,766, while an ounce of Tungsten is worth about $360.
An alarmed, if skeptical, post from Felix Salmon first drew attention to it.
But in no way has that ended speculation of a vast conspiracy that the world's gold supplies are being debased by filling gold ingots with tungsten.
A gold dealer in Manhattan's Diamond District on 47th Street discovered last week that an evidently certified gold bar was in fact more than 75 percent Tungsten.
Today we decided to follow up.
Ibrahim Fadl came to New York from Egypt in the mid-70s to earn a Masters in chemical engineering from Columbia University.