October’s birthstone is opal. Opals are eye-catching for their sheer spectrum of colors, which mirrors a sparkling kaleidoscope. According to ancient mythology, opal stones descended from the heavens during a bolt of lightning and produce feelings of happiness in their wearers. Shop Birthstone.com’s collection of opal rings, prized for producing flashes of super-bright contrasting colors as the gem or the light moves. Opal is the traditional stone honoring the 14th wedding anniversary.