Christian Dior necklace

Christian Dior gold tone necklace with a deep sapphire blue color crystal pendant. The pendant is set in gold tone metal and has 3 crystal bagett cut crystals on top. The necklace is 17”. The blue crystal is 3/8” wide and 1/2” long. With the clear crystals the length is 3/4”. There is a CD hang tag and on back it is marked Chr Dior. In pristine condition