Vintage Jewelry Stunning Coro Blue Enamel Leaf Rainbow Rhinestone Bling Midcentury Necklace. Absolutely gorgeous Coro sparkling Blue enamel floral necklace! The rhinestones are super sparkly! Can look turquoise tone in some lighting. In good vintage condition may show minor signs of wear due to normal use and age. Measures 14 inches Choker length (true choker) and the enamel leaves measure about a half inch in length. Shipped with USPS First Class Mail.