METAL: 18K yellow gold. GEMSTONES: diamonds-approx. 16.0 ctw, pearls. MEASUREMENTS: necklace is 15" long x 6mm wide. Dunay brooch measures 41mm x 29mm at widest point. MARKED: necklace marked 750 . Brooch marked Dunay 18K. WEIGHT: 56.2 grams.Gemstones have not been graded for color and clarity, and tested for clarity and color enhancement, unless stated otherwise.