Lone-sho (Worksite No. 2), Yadanar-kaday-kadar, Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Is a basin located a few hundred meters north-east of the Yadanar-kaday-kadar mine, at a higher elevation, just below Sinkwa. At Lone-sho, gem mining took place systematically on the valley, floor as well as at the surrounded slopes, using large-scale open-pit mining methods. The mine was closed in 2005.At Lone-sho rubies and fewer spinels are found in different types of marble. In the alluvium, ruby, spinel and some sapphire are mined using myaw-dwin method. Magnetite and limonite are found as accessory minerals. The blue sapphires are often of fine quality and large, sometimes attaining 5 cm in length. Rubies with characteristic golden-yellow star are also found.
Ref: Ted Themelis (2008) Gems and Mines of Mogok, p. 257