The costs of rose gold necklaces are quite comparable to that of yellow and white gold necklaces. The price of gold depends on the weight and the purity of gold and therefore, rose gold, which has the same amount of gold as other gold types, has nearly the same price. However, there may be a slight difference in the price of rose gold than other types because of the presence of copper which is an added ingredient in the making of the alloy. Although it is not much, it is something that one has to look at when buying a rose gold necklace. Overall, rose gold offers a unique and beautiful option without a significant difference in price.