Gold is measured in "karats" and to find the karat weight of gold you need to check out the chart that we have for you. The karat weight is looked at in a percentage.
24 karat is 24/24's gold or 100% gold.
18 karat is 18/24's gold or 75% gold (25% of the other metals are non-gold)
14 karat is 14/24's gold or 58.33% gold. (41.67% of the other metals are non-gold)
In karated gold, there is a balance of the other metals in the non-gold percentage. These metals provide the various colors and hardness of karated golds. Here are some examples.
Typical alloying metals mixed with gold and their color visual effects are:
24 karat Gold has a stunning visual Gold effect of course
Mixing Gold with Copper causes a visual Reddening effect
Mixing Gold with Silver causes a visual Greening effect
Mixing Gold with Zinc causes a visual Bleaching effect of the gold
Mixing Gold with Nickel causes a visual Whitening effect
Mixing Gold with Palladium causes a visual Whitening effect
For those of you who do not know what we mean by "alloy" or "alloyed", this means that you are bring two different metals together to make a new form of metal.
With that is mind is there an advantage to white gold over regular gold? No. It is all up to the person that is wearing it.