18ct white gold necklaces offer cool tones, clean lines and real staying power. With 75% pure gold in every piece, these are made to last—not just in quality, but in relevance. A fine chain adds quiet confidence to your everyday look. A pendant brings definition without the drama. These designs move easily between dressed-down and dressed-up. Wear yours with a white gold ring, diamond earrings or a silver bracelet. Either way, you’ll find yourself reaching for it more often than anything else in your collection.