Pentagonite (rare)

Item Description

Although Pentagonite is a rare mineral, it's well-known to mineral collectors thanks to the good number of pieces that have been found over the years at Wagholi, India. The finest pieces on the market are those from Wagholi, and although a good number have been found, the species is still considered quite rare. It's one of those minerals that's almost exclusively tied to a single locality. The species gets its name from the rare pentagonal twins seen in certain crystals (one of the best examples I can find is at the following link: https://www.le-comptoir-geologique.com/pentagonite-en-twinned-pentagonite-ref-b20-02.html) This piece features a lovely, 2.1 cm, intense neon blue color "spray" of Pentagonite aesthetically perched atop a layer of micro Heulandite crystals on basalt matrix. I can see a few tiny colorless Calcite rhombs on top of the Pentagonite under magnification. The incredible color of the Pentagonite combined with the fact that these are the finest example in the world makes it a very worthwhile specimen. Since there are so many specimens of Indian zeolites (and associated minerals) on the market, they do not get the recognition they deserve, but I want to stress that most of these minerals are incredibly fine quality and in a lot of cases the best crystallized examples of their respective species ever found. From the collection of Kurt Hefendehl (#15 IN), a well-known German collector all over Europe with worldwide contacts to dealers and collectors. He started collecting seriously at the age of 14 and his great and varied worldwide collection reached over 6000 pieces. He was very active mineralogically until shortly before his passing in 2020 at the age of 82. Considering his collection had a large number of pieces, it still had an unusually high standard of quality from most worldwide localities. He particularly specialized in all classics as well as minerals of the Black Forest, where he spent much time collecting. His Black Forest and German subcollections went to his good friend Wolfgang Wendel. We at The Arkenstone have the privilege of offering the remainder of this great worldwide collection over the coming months and years through our various platforms.