Peruvian Opal is the national stone of Peru and it is relatively rare and can only be found in the Andes mountains. Its internal crystalline composition is random, meaning this gemstone lacks the colour play or fire of a usual Opal. This stone correlates to the heart chakra, the energy centralized with concern and communication. The blue opal is said to be the most powerful of all healing stones. It can increase creativeness and inspiration, the stone is associated with good luck.