Laboratory record
GUILD Gem Laboratories
GUILD issues coloured stone, feicui jade and pearl reports, and lists an origin report among its services.
The record
HeadquartersShenzhen, China
Founded1980
Kind of bodyReport issuer
Country-of-origin opinionsIssued
StatusIssuing reports
What it covers
Coloured stoneJadePearlOrigin determinationTreatment detectionEducation
Reports it publishes
Named as the laboratory names them on its own site. Report contents and wording are set by the laboratory, not by us.
- Guild Folio
- Standard Report
- Pearl Grading Report
- Dossier Report
- Prestige Report
- Token of Love Report
Worth knowing
Submission points listed at Shenzhen, Zhuji, Hong Kong, Bangkok (Jewelry Trade Center), Beruwala and Los Angeles. States that it does not buy or sell gemstones.
Compiled from guildgemlab.com, read on August 18, 2026.
We verify dealers, not stones. A laboratory report describes one stone on one date; it is not a guarantee of value, and it is not ours to stand behind.