A Simple Test for Identification of Natural Tenebrescent Scapolite and Irradiated Tenebrescent Scapolite

I originally composed this laboratory alert note in December 2013 using a PowerPoint presentation.. However, I now want to share it on social media platforms to effectively distribute the information in a simple way.
With the help of this simple, effective test, geologists, mineralogists, gemologists, and people involved in the gemstone business can effortlessly differentiate between natural untreated tenebrescent scapolite and irradiated tenebrescent scapolite.

Here is the link below 

simple test for identification of natural untreated tenebrescent scapolite and irradiated scapolite☝