The opal is a galaxy in itself, like losing yourself in the Milky Way. The 18K rose gold orbs, set with blue sapphires and green tsavorites, are the foundation for the Tahitian pearl planets. The 18K yellow gold stars and moon, together with two white diamonds and sapphire, complete the solar system. The shank is made of 18K rose gold. Please keep in mind that the colour may differ with each ring due to the fact that every opal has truly unique colours.