Kyaukpazat (Choukpazat), Wuntho Township, Katha District, Sagaing Region, Myanmar
The locality is situated in the foothills of the Let-nyo-taung. The principle rocks of Ohn-gaing are syenite, marble, gneiss. Rubies and sapphires, small to medium in size (usually not exceeding 3 carats) of faceting and cabochon grades are mined in lebin (lebin-dwin) and open-pit mining schemes. Good-quality star sapphire, low-quality star ruby, spinel, garnet, amethyst and schorl are also found in the alluvium. In a small skarn (between gneiss and marble) situated at the edge of Ohn-gaing village, sinhalite, serendibite, amblygonite-montebrasite, jeremejevite and other rare minerals are found.Ref: Ted Themelis (2008) Gems and Mines of Mogok, p. 214