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  • Established in 1931, GIA is considered the world’s foremost authority in gemmology. Present in 13 countries, with 10 campuses, 4 research centres and 9 laboratories analysing some of the world’s most notable gems.
  • GIA is a nonprofit institute dedicated to continuous education and research in the field of gems and jewellery.
  • GIA’s mission is to ensure public trust in gems and jewellery by upholding the highest standards of integrity, academics, science and professionalism.
  • GIA created global standards to accurately determine diamond quality (4Cs – Color, Clarity, Cut and Carat Weight), coloured stones and pearls (GIA’s 7 Pearl Value FactorsTM – Size, Shape, Color, Lustre, Surface Quality, Nacre Quality and Matching).


The GIA Diamond Dossier® includes an assessment of the 4Cs – Color, Clarity, Cut, and Carat Weight – plus a microscopic laser inscription of the GIA report number for easy identification.


  • 0.15 to 1.99 carats
  • Loose
  • D-to-Z natural diamonds
  • Untreated (Not synthetics, simulants, mounted diamonds, diamonds with fracture filling or coating or HPHT processed)


  • Key grading details - Carat Weight, Color, Clarity and Cut grades
  • Additional grading information including Polish, Symmetry and Fluorescence
  • Laser inscription of the report number

Fees for Services*
Online results and a printable PDF are provided at GIA.edu through Report Check and My Laboratory.
For more information on Diamond Dossier requirements, please contact toll-free 1800 41 999 14 or write to labindia@gia.edu