Additional services
Verbal Pre-Grade / Evaluation
If you are considering buying a diamond or a piece of jewellery, it is essential to have it evaluated to make sure you are getting what you paid for. WGI's expert team explains the details of the item's quality and value, so you have a better understanding of your purchase.
What the service provides
- An expert opinion before purchase
- An explanation of quality and value
- No written report unless requested
The process
- 01You bring the item to the laboratory
- 02A gemologist examines it with you
- 03Findings are explained verbally
What a report may contain
- A verbal explanation of quality and value
Who it is for
- Consumers about to buy
- Private owners
- Trade buyers
Report contents depend on the item submitted. WGI describes the characteristics found; results cannot be guaranteed in advance.
World Gemological Institute
Discover the Confidence of WGI.
Whether you are exploring lab-grown diamonds, seeking professional gemological services or learning more about your jewellery, discover the expertise behind WGI.