The Sinkwa (Elephant's Footprint) mining area is situated at the bottom of a hill, NE of Kyauk-pyat-that
. The mining site has been known since the last century. Rubies
, purple and other fancy colored sapphires
of all qualities are recovered from the alluvium. Most of these gems are small in size and of medium quality.
Ref: Ted Themelis (2008) Gems and Mines of Mogok, p. 250