Costco launched platinum bars on its website for $1,089.99, an addition to the company's precious metals selection of gold ...

The 1-ounce platinum bars are available online now to members. This isn't the first time the store has sold precious metals.

Notable precious metals include gold, silver, platinum, and palladium ... You can purchase physical gold coins, bars, or jewelry. Investors can also buy gold stocks (shares of gold mining ...