The most recognizable and diagnostic inclusion feature for rubies of Tajik origin consists of small negative crystals, each individually associated with basal-oriented thin films. These occur in groups along planar concentrations, as shown on the left, or as isolated features. Also present are fine, reflective stringers.

More research about these unique rubies from Tajikistan was published in The Journal of Gemmology, Volume 36, No 4, pp 288-289. See below for the article!

For a PDF of the full article, please click here!