Ye-U-gyi (Big Water Well), Kyatpyin Central, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

The mining area has been known for many years. The area produces fine quality blue sapphires. Rubies, spinels of all qualities but small size as well as andradites are recovered from the alluvium. A moderate level of gem production is reportedly carried out here. In 1999 a beautiful 25-carat ruby was recovered and was sold in Thailand.

Ref: Ted Themelis (2008) Gems and Mines of Mogok, p. 248

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