The main site of ruby concentration at the Kukurt deposit
The corundum-bearing layer of grey, coarse-grained calcite marble about 20 m thick occurs between kyanite-garnet-biotite schists and a layer of yellow marble. Two en echelon mineralized zones, which are parallel to the bedding planes, have been traced along strike for 150 and 200 m.
Ref: E.Ya. Kievlenko, Geology of gems, 2003, p. 51 - 53
Gem list contains entries from all listed localities in region.
Localities in this Region