Materials: 14k Gold Gemstone: Aquamarine and Diamond Total Aquamarine Carat Weight: 0.49 ct. Total Diamond Carat Weight: 0.07 ct. Pendant Diameter: 8mm x 4.5mm Necklace: Adjustable 16, 17, and 18 inches with a lobster clasp. Description: This is natural aquamarine, not lab grown. This listing is for one aquamarine necklace. A beautiful aquamarine and diamond necklace with a center round aquamarine and two accenting diamonds. This beautiful piece will not tarnish in the shower and will not irri