Tiffany &Co. Vintage square montage cushion pendant necklace

Beautiful Tiffany &Co. Vintage square montage cushion pendant necklace . Has been worn , not new . Has tiny scratches . Pendant is approx 1/2” square and chain is 16” long . Comes in Tiffany pouch Mattel: Sterling Sliver 925 Hallmark:"Tiffany & Co. 925" Length Chain: 16" Includes: Original Tiffany Pouch Purchased at Tiffany’s on Bloor st in Toronto. I just had this piece cleaned at Tiffany’s.