Reports
Pearl Grading Report
The Pearl Grading Report issued by WGI provides a thorough evaluation of the quality and characteristics of a pearl, serving as a reliable reference for determining the quality and authenticity of pearls within the jewellery industry.
What the service provides
- Identification of the pearl type
- Assessment of lustre, surface and nacre
- Matching analysis for pairs and strands
The process
- 01Pearl type, shape and size are recorded
- 02Colour, overtone and lustre are assessed
- 03Surface and nacre quality are examined
- 04Treatments are checked, where applicable
What a report may contain
- Pearl type, such as Akoya, South Sea, Tahitian or Freshwater
- Shape and size in millimetres
- Body colour and overtone
- Lustre
- Surface quality
- Nacre thickness and quality
- Matching
- Treatment, if applicable
Who it is for
- Pearl jewellery owners
- Retailers and wholesalers
- Collectors
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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