Alunite (Angel Wing or Alum Stone.) Hydrated Aluminium Potassium Sulphate: KAl3(SO4)2(OH)6 Source: Hungary, Australia. Italy USA. Mohs: 3.5 – 4 Alunite is a hydrated aluminum potassium sulphate mineral, formula KAl3(SO4)2(OH)6. It was first observed in the 15th century at Tolfa, near Rome, where it is mined for the manufacture of alum. Alunite has a good grounding and stabilizing energy that helps to stabilize you both physically and emotionally. It is known as the stone that is balancing to the yin and yang energies. The Roman army doctor Dioscorideas wrote about using Alunite for stopping bleeding, as well as for its use to aid skin ulcers, dandruff and eczema. You can still buy it in sticks to stop bleeding while shaving. This crystal has a number of excellent healing properties and was used in the distant past to reduce body odor, and is still sold for that purpose.