This solitaire diamond necklace is a timeless accessory, perfect for layering with other chains or for wearing solo for a sophisticated statement. Metal: 925 sterling silver; optional 18k yellow / white / rose gold vermeilGemstone: natural diamond 2.3 mm / 0.07" (0.05ctw); 2.7 mm / 0.10" (0.08ctw), 3.2 mm / 0.12" (0.12ctw) (color - H, clarity - VS1)Chain style: silver cable chain