Ba Kev (Bo Kheo; Bo Kham; Bokeo; Phumi Ba Key; Andaung Pich; Andaung Pech), Ratanakiri Province, Cambodia
The Bo Keo deposit is the main world source of gem-quality zircons, also contains small quantities of sapphires.
Ref: E.Ya. Kievlenko (2003) Geology of gems, p. 46
Gemstone List