Painite was first mentioned by Claringbull-Gordon et al. (1957) after being found in the Mogok Stone Tract and named after Arthur Charles Davy Pain - a well known mineralogist and gemologist of the Mogok area. Painite is so rare that worldwide available specimens are individually numbered. To the best knowledge of the author, crystals No.1 and No.2 are currently deposited in the collection of the Natural History Museum London (a small sample slice from No. 1 is at Caltec University), Crystal, No.3 is in the Gemological Institute of America collection, while

Fig. D1 Map of the Mogok and the Ohn-Gaing/ Sagaing mining area (outlined in the Map). Ruby and sapphire mines are indicated. The picture shows the mining area North of Mogok (Myanmar) as seen from the view point (Ohn-Gaing in the foreground and Mogok in the background). Picture taken by the author during the study of the Ohn-Gaing mine and the study of Painite No.6a in Mogok in the year 2002