I talked about it in my Blogpost about my visit to Credo Mutwa in August 2010. Credo told me that Andalusite in its "cross marked" version that is also known as chiastolite is the only repellent for grey aliens when worn by humans.
Now you may be one of those sceptics that start chuckling in a very "knowing way" as soon as someone mentions aliens. However these little critters are very well known in African folklore and have been depicted consistently in a very similar way as in the drawings and sketches of "Western" contactees and Ufologists. Stories of abductions by these creatures are also rife in Africa and Credo has not only experienced such an abduction with genetic-medical experiments himself in the 1960s in Zimbabwe but also helped lots of abductees as a spiritual healer to overcome their trauma.
The figurine below is one of my six "madindane" that I found on the South African flea markets in 2001 after my first contact with Credo. Just for fun, I have put one of the new necklaces around his neck for a photo op..
Please note they have 6 fingers as reported by numerous contactees especially from South America. (5 fingers shown + opposing thumb)
The new pendant is in a new format of 35 mm diametre which is larger than our small pendants and smaller than the big one. The size allows for a more powerful SBB coil which is sitting behind the stone.
First feedback from sensitives suggests a warm rediant energy being emitted by this pendant.