Know About the Power and Elegance of Prehnite Jewelry Because of its power and elegance, Prehnite is a favorite among fashionistas and gemstone enthusiasts. It holds a score between 6 and 7 according to the Mohs hardness scale. It belongs to the phyllosilicate mineral group formed with the Orthorhombic crystal structure. Any jewelry collection would benefit from the lovely and significant addition of Prehnite Jewelry. Its strength and grace are unparalleled and can change your appearance and overall well-being. Prehnite is found worldwide in Australia, China, Canada, Germany,