This pendant is an Australian Opal doublet from the Coober Pedy mine. It is encased with recycled 925 sterling silver. 
An opal doublet is a slither of opal backed onto a slice of Ironstone from Queensland, Australia. The ironstone provides strength for the opal. 
Opal is a stone that has been used for years, with mining dating back to 400BC. Opal is believed to bring clarity, energy, and high vibrations which helps to call on the law of attraction. This pendant is a perfect law of attraction talisman, providing high vibrational energy, amplification powers, and a perfect sense of balance.
Opals are sensitive to chemicals. For this reason, we recommend trying to avoid contact with perfume, deodorant, hairspray or similar. We also recommend removing this jewellery when showering, bathing or swimming.