Reports

NGI Reports

NGI reports outline the conclusions and findings for a wide range of laboratory services.They are Gemstone Report, Diamond Report, Jewellery Appraisal Report and Precious Metal Testing Memo. These reports are in line with the standards set by leading gemological testing laboratories worldwide. These documents provide detailed information and disclosure of enhancement/treatments reflecting our independent position, fostering trust and transparency in the industry.

Gemstone Report

  • A Gemstone Report is the most versatile identification document and is issued for all gemstones, jade, organic gemstones such as pearl, amber and corals and many other items in loose and mounted forms
  • NGI does not issue reports to date an antique/item 
  • NGI reserves the right not to issue a report for certain items

To Verify Your Report, Click Here

(Applicable only for report issued after DDMMYYYY)

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Diamond Report

  • All loose diamonds, natural or synthetic (lab-grown), undergo thorough identification, and grading processes in compliance with international standards. (Reference to GIA)
  • The grading is based on the 4Cs (carat weight, clarity, color, and cut) and other essential criteria

To Verify Your Report, Click Here

(Applicable only for report issued after DDMMYYYY)

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Jewellery Appraisal Report

  • Jewellery Appraisal Reports are particularly useful for insurance,  estate settlement and court proceedings ensuring accurate assessment and documentation
  • We perform the test to main composition of the item(s), the gem, diamond & gold etc, followed by the evaluate the price accordingly
  • The value of the item can be stated in Singapore dollar SGD or major international currency USD
  • The report can be a single page for an item or a booklet for a collection of the items

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Precious Metal Testing Report

Precious Metal Testing Memo

  • We perform precious metal testing for jewelry and watch
  • An advanced testing instrument, (EDXRF) is used to analyse the chemical composition and the percentage of the elements
  • The test is non-destructive, but limited to surface of the items only
  • The accuracy of the result also depends on the surface conditions
  • Authenticity of the brand is not verified
  • Test results are presented for information only

To Verify Your Report, Click Here