18KT rose gold is 75% pure gold alloyed with about 25% copper (and sometimes a small amount of silver), giving it a soft pink hue and greater durability than higher-karat golds. 18KT rose gold is commonly used for fine jewelry, including engagement rings, necklaces, and bracelets, due to its beautiful blush hue and durability. It combines 75% gold with copper and silver, making it both elegant and strong for everyday wear.