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Editor

Marcus Whitlock, GG, FGA

Lapidary & Cutting Editor
11 entries

Lapidary & Cutting Editor

Marcus Whitlock, GG, FGA

Editorial persona of Zultpedia. Graduate Gemologist (GIA) and Fellow of the Gemmological Association of Great Britain. Lapidary and grading editor focusing on cleavage-aware faceting of orthorhombic crystals, master-cutter conventions, and the cut-grade evaluation rubric specific to color-change diaspore. Voice modelled on GIA Gems & Gemology trade journal and the IGS reference library. Entries by this persona address the practical questions a working bench cutter, retailer, or laboratory grader would ask.

Published Entries

011
  1. № 001 3.10-Carat Zultanite — Cushion Cut, Champagne-Phase Visible SPECIMEN
  2. № 002 7.25-Carat Zultanite — Faceted Oval, Strong Color Change SPECIMEN
  3. № 003 Cabochon GLOSSARY TERM
  4. № 004 Crown GLOSSARY TERM
  5. № 005 Culet GLOSSARY TERM
  6. № 006 Facet GLOSSARY TERM
  7. № 007 Girdle GLOSSARY TERM
  8. № 008 How Master Cutters Orient Diaspore Rough GEM ARTICLE 5 MIN
  9. № 009 Pavilion GLOSSARY TERM
  10. № 010 Table GLOSSARY TERM
  11. № 011 Why Zultanite Is Rare — Single Source, Cleavage Loss, and Trace Chemistry GEM ARTICLE 5 MIN
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