2 gold-toned necklaces w/ cool colors gems

These will look lovely on someone with winter coloring in their skin/hair. The first necklace is a 3-strand necklace with a variety of blue stones on all layers. When laid flat, shortest strand measures 16” and the longest strand measures 20”. Necklace also includes a 2” extender. Was around $12 originally. The second necklace could use a good cleaning. Was purchased in Aruba and features a peridot stone (August birthstone). Chain measures 17”. I believe the metal is goldfill. Was a gift.