The mining area of Inn-gaung-pyant (Plains of the Head Pond) comprises several dozen joint ventures, stretching about 2 km along the northern side of the Mogok-Mandalay road. Faceting grade rubies
, some of fine quality, together with spinel
are recovered from the alluvium, using open-pit mechanized mining methods. Good quality cabochon-grade rubies weighing up to 6 carats are frequently found.
Ref: Ted Themelis (2008) Gems and Mines of Mogok, p. 248