METAL: 18K gold, sterling silver. GEMSTONES: blue stones, purple stones. MEASUREMENTS: necklace is 36.5" long x 16mm at widest point. MARKED: Konstantino.Tested sterling silver, 18k gold. WEIGHT: 106.5 grams. Gemstones have not been graded for color and clarity ,and tested for clarity and color enhancement, unless stated otherwise. Watches are guaranteed to be in running order, if described as such, at the time of listing only. Watches have not been tested for features functionality, unless otherwise stated in description.