Apophyllite is a very suitable stone for use in healing. the mineral makes the person involved more receptive and pushes the healer's ego aside, so that the transfer of the healing energy is and can remain "purer". Many healers, healers and therapists have a piece of Apophyllite in their practice room. Chemical composition: KCa4F(Si4O10)2.8H2O. Mineral group: silicates. Crystal system: tetragonal. Formation: primary. Hardness: 4.5 to 5 Color: colorless, white, yellow, red, green, purple, blue-green, transparent to translucent. Gloss: glassy to pearly. Locations: India, USA, Germany, Brazil, Czech Republic, Scotland, Australia, Italy. Apophyllite belongs to zeolites, a group of minerals that contain water. It is often found in passages, crevices or cavities in basalt and limestone, where it has been deposited by aqueous solutions. The crystals usually have elongated prisms with a square cross section. Crystals can grow very large. However, the shape of the crystals can vary greatly from location to location. Apophyllite occurs in massive and granular aggregates. It is often found together with prehnite, quartz and stilbite. Very beautiful crystals are found in Poona, India. The name apophyllite comes from the Greek word 'apophulliso', which means fluff. Due to the mother-of-pearl shine and the special play of light, apophyllite is also called fish eye stone. Because the material is very soft and fragile, it is not often used for jewelry. When apophyllite is heated it flakes.