The mine concessions at Thit-seint-kone (Oil-producing Nut Tree) are located at the bottom of the ridge near the village of Thit-seint-kone. The mines are using myaw-dwin
methods to recover blue sapphire
and other gems from a small pegmatite dyke, as well as from the alluvium. At the nearby skarn topaz
and other gems are found.
Ref: Ted Themelis (2008) Gems and Mines of Mogok, p. 265