Loi-sau mountain (Gaba-ant-bwe Taung), Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
At Loi-sau mountain situated about 3 km east of the Pein-pyit village, gem-quality jeremejevite crystals are found. In 2005, a faceted 4.53 carats yellowish jeremejevite was sold at Htar-Pwe, the main gem market in Mogok.Ref: Ted Themelis (2008) Gems and Mines of Mogok, p. 193