Opal Mid-Century Snake Ring 14k Yellow Gold.  This mid-century cocktail ring features a .49 carat opal with .02 carats of diamond accents and is finished in 14 karat yellow gold. The snake is expertly crafted in a very dramatic position, fixed on the opal with its diamond eyes and poised to strike. The textured back of the snake continues around the entire ring, adding another feature that brings the creature to life.