Opal gemstone jewellery: The opal meaning signifies the joy of life, which is attained with the positive and the mystical energies. These stones give the belief to the person that they can achieve whatever they desire in life. It is an evil eye slayer, protecting the wearer from all the negative energy, purifying the heart of the person. In simple words, we can say that it can fill life with its charm and happiness. Opal is a mineraloid, not a mineral. It is made with hydrated silicon dioxide and is an amorphous stone which means that it doesn't have any crystalline structure and no definite chemical composition. The opal crystals were formed when the evaporation process happened, and only the gelatinous mixture was left between the fractures and veins of sedimentary rocks and minerals. After solidifying, Opal still has 6 to 10 percent water content, making it delicate and soft to handle.