The drilled Tumbled Stones of bright green Prehnite show the typical inclusions of black Hornblende.
Modern stone healing according to Michael Gienger appreciates the mineral for its effect of strengthening the acceptance of oneself and of fellow human beings. Unpleasant truths can be accepted more easily with the help of this type of stone.
The drilled Tumbled Stones from Prehnit are approx. 3cm large and by the 2,5mm drilling very well e.g. to carry at a color-matching Cotton Cords.
The mineral Prehnite got its name after Colonel Hendrik von Prehn (1733 - 1785); spellings like Phrenite, Prenhite, Prenith or Phrenite are therefore not correct. Von Prehn brought back samples from the Cape of Good Hope in 1783 and had them examined by the mineralogist Abraham Gottlob Werner. The latter described the material and named it after von Prehn then Prehnite. The stone is the first mineral that is named after a person.
Trade names for the Prehnt are cape chrysolite and cape emerald, earlier common names are aedelite, chiltonite, coupholite and edelite.
Prehnite is stone of the month July 2020.