Gem Reference › Singapore Gem Labs › NGI — Nan Yang Gemological Institute
Gem testing laboratory and gemmology school, Far East Plaza, Singapore
| Established | 2001 (per NGI\'s website) |
| Focus | Gem testing laboratory + gemmology education; jadeite a stated specialisation |
| Location | Far East Plaza, Scotts Road, Singapore |
| Website | ngi.com.sg |
| Education | Gemmology and jadeite-identification courses; also sells gemological tools |
NGI describes itself as a provider of gem testing laboratory services and gemmological education in Far East Plaza, operating since 2001. Its laboratory specialises in identifying gemstones, jadeite and diamonds, and jewellers and collectors in Singapore use its reports when certifying stones. Alongside testing, NGI runs education programmes — its jadeite course covers identifying jadeite and its treatments, the classifications of jadeite, and telling natural jadeite from simulants — and sells gemological tools and equipment.
NGI is one of the most visible gem laboratories in Singapore: its pages rank for gem testing, jade certification and diamond grading searches, and its certificates accompany jadeite sold in Singapore jewellers. If you have bought jadeite in Singapore, an NGI report may already be in your possession.
A laboratory report tells you what a stone is; it rarely tells you what it is worth or whether the price is fair. When you receive one, check: the identification line (natural vs treated), any treatment disclosures, the date, and whether weights and dimensions match your stone. For jadeite, treatment wording matters most — polymer-impregnated jadeite is a different product from untreated material at the same colour. Understanding those distinctions is gemmology, not paperwork — which is exactly what JDMIS teaches.
Does NGI certify gemstones and jadeite in Singapore?
Yes. NGI operates a gem testing laboratory in Far East Plaza specialising in identifying gemstones, jadeite and diamonds, and issues reports used by jewellers and collectors.
Does NGI offer gemmology courses?
Yes. NGI runs gemmology education including a jadeite-identification course covering treatments, classifications and separating natural jadeite from simulants.
Laboratories verify; gemmologists understand. JDMIS teaches the trade's gem knowledge in two steps — no science background needed:
Free while you read: the Gem Globe shows where the world's gemstones come from, and Name That Gem lets you test your eye with real instruments.
Profile information gathered November 2026 from the organisation's own public website (linked above) and other published material. Directory pages are maintained by JDMIS for public education; organisations can request corrections. JDMIS is an independent education provider and is not affiliated with the laboratories listed.