Gold is the most popular choice for men’s wedding bands. It has three color variations: white, yellow, and rose gold. Since pure gold is too soft on its own, it is mixed with various alloys to alter its color and strength.
If you're looking for a gold wedding band, if the heftiness and value of the ring is important, than consider getting an 18K or 14K ring. If you want a gold ring just for the looks, then stick to 10K. If you want a richer color of gold, you'll want to get an 18K ring. An 18K Gold Ring will have more gold than a 10K ring, but the tradeoff is since it has more gold, it's softer and less durable.
Rose gold is a variant that contains mainly copper to give it a beautiful red/rose hue. Rose gold has become more and more popular recently. White gold has a slight yellow tint when cast, but putting a rhodium plate on it will achieve its pure white look. This is beautiful, but it requires more maintenance. This type of ring needs yearly polishing, especially when you wear your ring daily.