Pyaung-pyin-ahnout (Pyaung-pein west), Marble Ark, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

For years the gem-mining took place on the small valley floor. Rubies and other gems were recovered from the rich alluvium, using open-pit and loo-dwin mining methods. In 2002 the valley floor area was mined out.

Gem mining continued at the nearby primary ruby deposit and at the numerous loos (twisted holes) and letkya (cavity filled deposit) using gwè-dwin, loo-dwin and letkya-dwin gem mining methods.

Rubies, sapphires (mostly colorless, yellowish, purplish), spinels (red, purple and other colors), diopside and some quartz are recovered. Generally most of these gems are of good quality and weigh under 5 carats; larger gems are rarely found.

Ref: Ted Themelis (2008) Gems and Mines of Mogok, p. 236

Gemstone List

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