The Delta SkyMiles® Platinum American Express Card is one of the best airline rewards cards. It's best for Delta Airlines travelers who want premium benefits.

Platinum is a key component in automobile catalytic converters. That's why platinum stocks could make a good long-term investment.

Interactive gold price charts showing the price of gold today per ounce, gram, and kilogram. Ten years of charts with prices for various world currencies.

Interactive gold price charts showing the price of gold today per ounce, gram, and kilogram. Ten years of charts with prices for various world currencies.