GIA Graduate Gemologist · Trusted Jewelries
A jewelry designer by training who became a gemologist. Valentina checks every Trust Check against its sources before it goes live.
About Valentina
Valentina Di Roberto trained as a jewelry designer: she studied Fashion Jewellery Design at London College of Fashion, part of University of the Arts London. She later moved into gemology and in June 2023 earned the Graduate Gemologist diploma from the Gemological Institute of America (GIA). She lives in Italy.
GIA's Graduate Gemologist program covers grading diamonds and identifying colored stones, including telling natural stones from lab-grown and treated ones.
Expertise
- Diamond grading and grading reports
- Identifying gemstones, including lab-grown and treated stones
- Jewelry design
Credentials
- Graduate Gemologist (GG), Gemological Institute of America (GIA), June 2023
Education
- Fashion Jewellery Design — London College of Fashion, University of the Arts London
What Valentina does on Trust Checks
Valentina reads each store’s policies and terms, checks every fact against its source, scores the store using our published methodology and signs off on the review before it goes live. When a review includes a hands-on check — a support test, a checkout walk-through or a test order — it says who did it and when.
Trust Checks by Valentina
- Keyzar Jewelry — Trust Score 78/100, Trustworthy · updated Oct 27, 2026
Contact
To reach Valentina or report a mistake in a review, use our contact page.