Level up your ring stack with this beautifully bohemian ring featuring an oval cabochon cut black onyx gemstone in an asymmetrical setting of yellow gold plated sterling silver.   Gemstone Information Explore your darker side with sleek and seductive onyx gemstone jewellery. discover a range of rings earrings more lined metallic marcasite in sterling silver designs.   Jewellery Collection Discover the Irregular Collection by Gemondo where organic shapes are balanced in beauty with twinkling diamonds and cloudy cabochon cut gems in unusual forms of gold plated sterling silver.