Reports
Gemstone Identification Report
Gemstone Identification Reports are requested for standard identification and verification of diamonds and coloured stones. The report includes the species of the material, detailed measurements, quality and weight, as well as a detailed photograph of the gemstone.
What the service provides
- Identification of the gem species
- Detection of treatments where possible
- An origin opinion where applicable
The process
- 01Optical and physical properties are measured
- 02The stone is examined under magnification
- 03Advanced testing, such as FT-IR, is applied when required
- 04The report is prepared with a photograph of the stone
What a report may contain
- Species and variety
- Measurements and weight
- Shape and cutting style
- Colour description
- Treatment observations
- Photograph
Who it is for
- Coloured gemstone buyers and collectors
- Dealers and auction houses
- Jewellers
Report contents depend on the item submitted. WGI describes the characteristics found; results cannot be guaranteed in advance.
World Gemological Institute
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