This is an authetic vintage necklace by Gucci, it is crafted from sterling silver with 18k yellow gold accent. The pendant is long and blends with the wide snake chain in a collar style, it has sterling silver on each end and yellow gold layered top in the middle with a 2 carats cushion shape red garnet gemstone. The back of the frame is in sterling silver. The pendant is attached to one end of the chain and secures from the other end to the snake chain. It is hallmarked Gucci 18k 925Material: 18k yellowg gold and sterling silverGemstone: Garnet 2.00 carats totalMeasurement: 15.5" long with pendant x 0.20" wide x 0.13" thickPendant: 1.70" long x 0.35" wide x 0.28" highWeight: 37.4 grams