If you buy non-standardized jewelry, antique coins or other items, it’s harder to evaluate how much gold is in the item and what it is worth as an investment.

The Staffordshire Hoard is truly one of a kind as the largest collection of Anglo-Saxon gold and silver found to date. There are around 4,000 items, most of which are military pieces.

ROSEN: If you look at over the last, say, 20 years, gold is up about 50%. The S&P is up about 500%, so 10 times what gold has gone up. And Costco is up about 2,500% - or 50 times what gold has been.