Press Release

GIA Report for Laboratory-Grown Diamonds


Detailed explanation of changes

CARLSBAD, Calif. – 1 April 2019 – On 29 March 2019, GIA announced changes to its laboratory-grown diamond grading report to align the report with recent revisions to the US Federal Trade Commission (FTC) Jewelry Guides.
 
As of 1 July 2019, GIA will discontinue the GIA Synthetic Diamond Grading ReportTM, introduced in January 2007, and introduce the GIA Laboratory-Grown Diamond ReportTM.
 

  • The GIA Laboratory-Grown Diamond Report will include the standard GIA colour, clarity and cut grading scales for reference purposes.
 
  • The GIA Laboratory-Grown Diamond Report will continue to use Colourless, Near Colourless, Faint, Very Faint and Faint to report the colour grades for laboratory-grown diamonds, rather than the letters used to report the colour grades for natural diamonds.
 
  • The standard GIA colour-grading scales will be included on the report for reference, for example: Colourless for D, E and F; Near Colourless for G, H, I and J; and Faint for K, L and M.
 
  • The GIA Laboratory-Grown Diamond Report will continue to use Flawless, Internally Flawless, Very Very Slightly Included, Very Slightly Included, Slightly Included and Included to report the clarity grades for laboratory-grown diamonds, rather than the VVS1 and VVS2; VS1 and VS2; SI1 and SI2; and I1, I2 and I3 grades used to report clarity for natural diamonds.
 
  • The standard GIA clarity-grading scales will be included on the report for reference, for example Slightly Included for SI1 and SI2.
 
  • The GIA Laboratory-Grown Diamond Report will use ‘laboratory-grown’ in the identification line of the report; ‘synthetic’ will not be used in the report.
 
  • The GIA Laboratory-Grown Diamond Report includes the following statement: This is a man-made diamond produced by CVD (Chemical Vapour Deposition) or HPHT (High Pressure High Temperature) growth processes and may include post-growth treatments to change the colour.
 
  • All detected clarity treatments will be disclosed.
 
  • The QR code on the GIA Laboratory-Grown Diamond Report will link to GIA’s online Report Check Service which can be used to confirm that the information on a report matches what is in the GIA report database. The Report Check record for each GIA Laboratory-Grown Diamond Report will include educational material about the CVD and HPHT methods for growing laboratory-grown diamonds to help educate consumers and fulfil our mission of ensuring the public trust in gems and jewellery.
 
  • GIA specifies ‘natural diamond’ on its grading reports for natural diamonds – the GIA Diamond Grading ReportTM and the GIA Diamond DossierTM.
 
  • Any GIA Synthetic Diamond Grading Report issued since 1 Jan 2018, may be returned and exchanged for the GIA Laboratory-Grown Diamond Report at no cost.

 
Visit GIA.edu for an illustration of the GIA Laboratory-Grown Diamond Report.


About GIA

An independent non-profit organisation, GIA (Gemological Institute of America), established in 1931, is recognised as the world’s foremost authority in gemmology. GIA invented the famous 4Cs of Colour, Clarity, Cut and Carat Weight and, in 1953, created the International Diamond Grading System™ which is recognised around the world as the standard for diamond quality.
 
Through research, education, gemmological laboratory services and instrument development, the Institute is dedicated to ensuring the public trust in gems and jewellery by upholding the highest standards of integrity, academics, science and professionalism.