Platinum Vintage Art Deco Diamond Necklace. Piece has the Vintage Bow in the center with Filigree leaf pattern that hangs from an Octavia 16″ Chain. There are 147 Old Mine cut diamonds weighing 5.90 carats total weight, Color G-I, Clarity SI 1-2. There are 7 Beautiful Briolette Natural Chocolate Diamonds that hang from the filigree pattern. Piece Weighs 18.6 Grams.