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Editor

Dr. Rashid Karimov

Gemological Spectroscopy Editor
31 entries

Gemological Spectroscopy Editor

Dr. Rashid Karimov

Editorial persona of Zultpedia. PhD in analytical chemistry with focus on gemological spectroscopy — UV-Vis-NIR absorption, FTIR, Raman, and LA-ICP-MS as applied to natural-versus-synthetic discrimination of color-change gems. Spectroscopy editor for the archive, responsible for entries on identification protocols, lab-report interpretation, and detection of treatments and synthetics. Voice modelled on Gems & Gemology and Journal of Gemmology peer-review register.

Published Entries

031
  1. № 001 Color Change of Zultanite — Three Illuminants, One Crystal PROPERTY GUIDE 4 MIN
  2. № 002 Common Treatments on Other Color-Change Gems — and Why Diaspore Is Different GEM ARTICLE 5 MIN
  3. № 003 Fluorescence GLOSSARY TERM
  4. № 004 FTIR Spectroscopy GLOSSARY TERM
  5. № 005 How Much Is Zultanite Worth? — Price and Value Guide EDUCATION ARTICLE 7 MIN
  6. № 006 How to Identify Real Zultanite — Frequently Asked Questions FAQ CLUSTER 6 MIN
  7. № 007 How to Photograph Zultanite Color Change EDUCATION ARTICLE 5 MIN
  8. № 008 How to Read a GIA Zultanite Report EDUCATION ARTICLE 5 MIN
  9. № 009 How to Spot Fake Zultanite — A Field Checklist EDUCATION ARTICLE 5 MIN
  10. № 010 Identifying Natural Versus Synthetic Diaspore GEM ARTICLE 5 MIN
  11. № 011 Inclusion GLOSSARY TERM
  12. № 012 LA-ICP-MS GLOSSARY TERM
  13. № 013 Lab Reports — What GIA and IGS Document for Color-Change Diaspore GEM ARTICLE 5 MIN
  14. № 014 Pleochroism GLOSSARY TERM
  15. № 015 Pleochroism of Zultanite — Three Crystallographic Colors PROPERTY GUIDE 4 MIN
  16. № 016 Refractive Index of Zultanite — 1.682 to 1.752 PROPERTY GUIDE 4 MIN
  17. № 017 Specific Gravity of Zultanite — 3.30 to 3.39 PROPERTY GUIDE 4 MIN
  18. № 018 The Absorption Spectrum of Color-Change Diaspore GEM ARTICLE 5 MIN
  19. № 019 The Color-Change Phenomenon in Zultanite — How and Why It Works GEM ARTICLE 8 MIN
  20. № 020 The Trace-Element Chemistry of Zultanite — Iron, Chromium, and the Color-Change Mechanism GEM ARTICLE 5 MIN
  21. № 021 UV-Vis-NIR Spectroscopy GLOSSARY TERM
  22. № 022 Why Zultanite Is Sold Untreated GEM ARTICLE 5 MIN
  23. № 023 Zultanite — Fracture-Filling and Coating Detection in Gemological Labs GEM ARTICLE 4 MIN
  24. № 024 Zultanite Lab Reports — Why “No Treatment” Is the Documented Norm GEM ARTICLE 4 MIN
  25. № 025 Zultanite vs Ametrine — Color Change vs Color Zoning GEM COMPARISON 5 MIN
  26. № 026 Zultanite vs Andalusite — Two Türkiye-Adjacent Pleochroic Gems Compared GEM COMPARISON 5 MIN
  27. № 027 Zultanite vs Color-Change Garnet GEM COMPARISON 5 MIN
  28. № 028 Zultanite vs Color-Change Sapphire GEM COMPARISON 5 MIN
  29. № 029 Zultanite vs Csarite vs Ottomanite vs Turkizite — One Gem, Four Names GEM COMPARISON 5 MIN
  30. № 030 Zultanite vs Opal — Color Change vs Play-of-Color GEM COMPARISON 5 MIN
  31. № 031 Zultanite vs Other Color-Change Gems — Frequently Asked Questions FAQ CLUSTER 6 MIN
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