Hauyne is a rare blue mineral that belongs to the sodalite group and is commonly found in volcanic rocks. Its chemical composition includes sodium, calcium, aluminum, silicon, and sulfur. Some of the synonyms for hauyne are lazurite, haüynite, and blue sodalite. These names are used interchangeably to refer to the same mineral depending on the geological location and context. Hauynes are known for their deep blue color, which is often used in the production of jewelry, decorative objects, and pigments. Despite being a precious mineral, hauynes are challenging to find and extract due to their rarity and the cost involved in mining and processing.