Safehaven reported on Tungsten as a Gold Substitute:

In early 2008 it was reported that at least some of the gold bars in the vaults at the National Bank of Ethiopia were fake. The discovery was made when bars shipped from Ethiopia to South Africa were returned after they were identified as being gilded steel.Gilded steel is a very unconvincing form of fake gold because the density of the iron alloy is significantly less. A steel bar identical in volume to the standard 400 troy ounce gold bars commonly used in bank-to-bank trades would weigh only 162.5 troy ounces (about sixty percent lighter). Anyone familiar with handling gold bars would easily identify them as fake.

Click here to access the entire Editorial ^[1]