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Everything we know about precious stones, open to everyone: how they form, how laboratories grade them, how they are treated, traded and cared for.

(Fig. 01)Index22 chapters · 184 entries · 48 figures

Chapters

Twenty-two chapters on precious stones.

  1. A-01Foundations01Definitions & classification8 entries · 7 min · 4 fig.
  2. A-02Foundations02The stones17 entries · 16 min · 1 fig.
  3. A-03Foundations03Gem science10 entries · 9 min · 3 fig.
  4. A-04Earth04Geology & formation8 entries · 8 min · 2 fig.
  5. B-01Earth05Mining & sourcing9 entries · 9 min · 1 fig.
  6. B-02Trade06Industry & supply chain9 entries · 8 min · 2 fig.
  7. B-03Craft07Cutting & lapidary10 entries · 10 min · 2 fig.
  8. B-04Assessment08Grading & evaluation8 entries · 8 min · 3 fig.
  9. C-01Assessment09Labs & certification4 entries · 4 min · 1 fig.
  10. C-02Assessment10Treatments & enhancements9 entries · 9 min · 1 fig.
  11. C-03Assessment11Synthetics & simulants7 entries · 7 min · 1 fig.
  12. C-04Assessment12Identification & instruments6 entries · 6 min · 2 fig.
  13. D-01Trade13Markets, pricing & investment14 entries · 14 min · 4 fig.
  14. D-02Trade14Auctions & record sales5 entries · 6 min · 1 fig.
  15. D-03Culture15Famous stones & historic jewels8 entries · 8 min · 4 fig.
  16. D-04Craft16Jewelry design & manufacturing8 entries · 9 min · 4 fig.
  17. E-01Society17Ethics, ESG & regulation9 entries · 9 min · 2 fig.
  18. E-02Society18Legal, tax, security & crime8 entries · 9 min · 1 fig.
  19. E-03Society19Technology8 entries · 9 min · 2 fig.
  20. E-04Culture20History, culture & symbolism9 entries · 10 min · 3 fig.
  21. F-01Society21Careers, education & events4 entries · 5 min · 2 fig.
  22. F-02Society22Ownership, care & collecting6 entries · 7 min · 2 fig.
  23. F-03ReferenceA–ZEvery entry, stone and place in one alphabetical listIndex