Prehnite is a translucent to transparent gem-quality hydrated calcium aluminum silicate. It was the first mineral named after an individual & the first mineral to be described from South Africa, long before South Africa became one of the most important sources for precious & semi-precious gems. First described in 1788, after its discovery in the Karoo dolerites of Cradock, South Africa. Prehnite was named after its discoverer, Colonel Hendrik von Prehn (1733-1785), a Dutch mineralogist & an early governor of the Cape of Good Hope colony.
Prehnite is in the orthorhombic crystal class, usually found in radiating botryoidal aggregate forms, & rarely as tabular & pyramidal crystals. When heated, Prehnite crystals can sometimes give off water. It has a brittle tenacity & an uneven fracture. When polished, Prehnite has a vitreous to pearly luster. Prehnite may be confused with Apatite, Jade or Serpentine.
Prehnite occurs in the veins & cavities of mafic volcanic rock. It is a typical product of low-grade metamorphism. Primary deposits of Prehnite are sourced from several locations around the world. In China, Prehnite is sometimes referred to as 'grape jade' owing to its typical nodule formations which often resemble a bunch of grapes. Its color is usually a soft apple-green, which is quite unique, but it can also occur in rarer colors including yellow, orange & blue.
Prehnite is considered a stone of unconditional love & the crystal to heal the healer. It is said to enhance precognition & inner knowing. Prehnite is known to bring calm to the environment & provide peace & protection. It resonates harmony with nature & the elemental forces. Prehnite alleviates nightmares, phobias & deep fears. It is a stone for dreaming and remembering.
