Alloy jewelry refers to pieces that include two or more metals, one of them generally being a precious metal. These metals are often mixed together to bolster the composition of the pure metal and make the overall piece more durable for daily wear. Some of the most popular alloys used in jewelry include gold, silver, platinum, and stainless steel. People may prefer one metal over another due to different reasons, making the best metal for men’s necklace or women’s necklaces a highly personal preference for jewelry wearers.