Heres a GIA expedition from 2016 to Tasmania, also some information about the TRAPICHE-TYPE SAPPHIRE FROM TASMANIA (sorry bout the capps was cut and paste) interesting read
http://www.giathai.net/video-hunting-sapphires-tasmania/
http://www.giathai.net/sapphire-from-tasmania/
http://www.giathai.net/video-hunting-sapphires-tasmania/
http://www.giathai.net/sapphire-from-tasmania/