This 12 MM Diamond Cut Beaded Cross Necklace is 14K Tri Color Gold. Approximate item weight is 2.03 grams. Length is 18 inches. Width is 12 MM. Spring Ring clasp type. Caring for Your Gold Jewelry: to keep gold shining and scratch-free, avoid contact with chlorine and other harsh chemicals. Do not wear jewelry during rough work and be sure to store it in a fabric jewelry box or pouch. To clean gold jewelry, use warm water, a mild soap, and a soft-bristled brush, if needed.