My name is Nikoleta Tzankova – gemologist, mineralogist.

As a result of my education (Bachelor’s Degree – Gemology, Master’s degree – Applied Mineralogy, Ph.D. in Mineralogy and Crystallography, Diamond grader and colored stone grader – International Gemological Institute, Antwerp, Belgium) and many years of experience as a university lecturer in Mineralogy and Gemology, I found the joy of encouraging and motivating knowledge seekers.
My publications and projects are in Gemology science, Mineralogy, Crystallography, and Archaeomineralogy. I am interested in gemstones identification and grading, synthetics, imitations, treatments, deposits.
In the field of archaeomineralogy, I have experience studying mineral artifacts and jewelry, mineral and glass beads, ancient tools, and slags.

Professional affiliations: Bulgarian Geological Society, Union of Scientists in Bulgaria

Languages: English, Russian, Bulgarian – native


Ph.D. Thesis:

Tzankova N. 2007. Morphology and crystal-chemistry of garnets from the metamorphic rocks in the frame of the Sakar pluton, SE Bulgaria. – Ph.D. in Mineralogy and Crystallography University of Mining and Geology “St. Ivan Rilski”, Sofia, 211.

A brief overview of the main results (in Bulgarian) HERE



Useful links and blog

Research and projects

Professional and research interests: mineralogy, crystallography, gemology, archeomineralogy, ecology.