Most of the diamond gold rings available in the market are timeless and romantic too, which is another reason for their growing popularity.         Gold is often mixed with different types of alloys to make it suitable for making diamond rings and other pieces of jewelry. The alloy that is mixed with gold usually affects its color. For instance, pure gold that is mixed with copper and silver has a yellowish golden appearance, while the mixture of silver, palladium, and pure gold results in a whitish golden look. It is best to look for big gold diamond rings with at least 18 karats, as they will last for a very long time. Still, customers who wish to maintain the natural elegance and shine of diamond gold rings will have to regularly clean them to remove dirt and debris from the surface of these rings.