Prospective alluvial
sapphire deposits related to Cenozoic trachybasalt volcanic formations. Modern alluvial placer deposits, in which yellow, green, blue
sapphires occur with olivine, pyroxene (
enstatite, etc.), black
spinel,
zircon and
pyrope.
Ref: E.Ya. Kievlenko (2003) Geology of gems, p. 68
Gemstone List
Gem list contains entries from all listed localities in region.
Localities in this Region
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