14k Gold Plated with Cubic Zirconia Blue and Green Enamel Coiled Serpent Snake Stiff Collar Necklace. Slither into pure glamor with this statement stiff collar necklace, finely crafted in brightly polished 14K Gold Plating. Cubic zirconias (May Birthstone) nestle in the eyes of this luxe serpent snake. Different shades of green and blue enamel inlays on the scales give this lavish necklace dimension and bright color. A hinge on the back allows this necklace to be placed on and removed comfortably.