What are the best ways to gain exposure to gold and silver? To answer that quesiton, we turn to resource sector experts Mary Anne and Pamela Aden.

In their advisory service, The Aden Forecast, the sisters offers five ways to buy precious metals, ranging from buying bullion to purchasing exchange-traded funds to their favorite individual mining stocks.

"Investors continually ask us how and what is the best way to buy gold. The following overview will assist you in deciding what is best for you:

1) Buying one ounce gold coins, be it American Eagles, Maple Leafs, Krugerrands or Philharmonics, is the best way to buy gold and, in today’s world the safest way to buy and keep gold. Likewise for silver, but with silver it’s best to buy more in the bars, 10 or 100 ounce bars.

"Most reputable dealers will ship bars or coins across the U.S. Premiums and availability are the main considerations when picking a coin dealer. We recommend shopping around. If you don’t have a dealer, we recommend American Gold Exchange in Texas.

2) Physical gold can also be bought on the internet, on sites like Kitco.com. It’s important to buy from a reputable website and we know Kitco is one of these sites.

"They have several options and ways to buy gold. They also offer Perth Certificates guaranteed by the Australian government. This way you don’t have to take delivery and your gold is held in Australia.

3) Most major banks in Canada, Europe and other countries also provide gold coins. Keep in mind, there are many companies who offer the same.

4) Since 2004, a gold exchange-traded fund now called SPDR Gold Shares (NYSE: GLD) began and since then others have blossomed, from iShares Comex Gold (NYSE: IAU) to a silver ETF, iShares Silver Trust (NYSE: SLV).

"This new demand gave a huge boost to gold investing and this provides an easy way to buy gold and silver. In addition, you can gain exposure to gold mining shares via the Market Vectors Gold Miners (NYSE: GDX).

5) "With GLD alone turning into a powerful gold source, many are concerned about confiscation and safety. A good way to diversify is by buying the Canadian funds -- Central Fund of Canada (ASE: CEF) and Central Gold Trust (ASE: GTU).

"Both of these are top-notch audited funds. CEF is a physical gold and silver holding while GTU owns gold only. They are closed end funds so it’s important to check their premium over their net asset value."