White gold does not exist in nature, only yellow gold does. White gold is made by mixing 10 parts white alloys in with 14 parts yellow gold. So 14k white gold and 14k yellow gold have the exact same amount of gold in them, but white gold has a white color. Most white gold currently is coated, or plated, with a rhodium finish. This is why after wear, it will begin to turn yellow. Rose gold, or pink gold, is just like white gold, but the 10 parts other alloys (usually copper) make it appear to have a pink hue.