It is located east of
Sinkwa.
Rubies are mined from the alluvium using the
myaw-dwin and
lebin mining methods. Low quality blue
sapphires weighing more than 5 ct are often found in the alluvium.
Rubies and
spinels are also found in the loos (twisted holes) and in the caves, characterizing the general area. Most of the rubies found in primary rock are dark red and brown-red, signifying the presence of iron and absence of fluorescence in UV light. Heat treatment generally improves the appearance of these rubies. At the nearby contact zone between marble and leucogranite gem quality
painite and chatoyant painite crystals are found with ruby or spinel. Other gems found in the contact zone include
rutile,
diopside, chrome elbaite,
schorl, yellowish and yellow-red
zircons which may appear bi-colored.
Ref: Ted Themelis (2008) Gems and Mines of Mogok, p. 250
Gemstone List