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.  Peru Pink Opal is high in silica and this opal is almost a light to bright pink chalcedony. Pink opal is also found in western Australia. Pink opal is considered stable and also known as pink Andean Opal or Angelskin Opal.  This stone has the power of relaxation and it’s an excellent stone for calming the mind and considered useful for a good nights sleep.