Answer
May 07, 2025 - 08:14 AM
An 18K gold necklace contains 75% pure gold. The "18K" refers to 18 out of 24 parts being gold, with the remaining 6 parts made up of other metals for added strength and durability. The exact amount of gold in the necklace depends on its total weight, but 75% of that weight will be pure gold.