Make sure your gold doesn't have a tungsten center. http://www.zerohedge.com/news/2012-09-24/get-your-fake-tungsten-filled-gold-coins-here http://www.zerohedge

Make sure your gold doesn't have a tungsten center. http://www.zerohedge.com/news/2012-09-24/get-your-fake-tungsten-filled-gold-coins-here http://www.zerohedge.com/news/2012-09-24/get-your-fake-tungs... AFAIK, the only way to make certain is via destructive physical inspection (drill a hole in it).