This Diamond Necklace with Chain is 14K Yellow Gold. Approximate item weight is 2.88 grams. Length is 15 MM including bale. Width is 5 MM. Spring Ring clasp type. Diamond stone 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.