Gem Reference › Singapore Gem Labs › Raffles GemLab
Type A Burmese jadeite and selected GIA diamonds, Singapore
| Type | Gem and jewellery retailer (dealer profile) |
| Specialities | Type A Burmese jadeite; GIA-certified diamonds selected for cut quality |
| Website | rgl.com.sg |
Raffles GemLab is a Singapore dealer that specialises in high-quality Type A Burmese jadeite — untreated jadeite, the grade our jade identification guide explains in detail — and in GIA-certified diamonds chosen beyond the certificate: the retailer states it stocks only diamonds whose cut delivers heart-and-arrow symmetry and strong light return, judged with dedicated scopes rather than paper grades alone.
Raffles GemLab publishes a genuinely useful explainer on its site: a GIA "triple excellent" grade (excellent cut, symmetry and polish) does not by itself guarantee heart-and-arrow patterns or optimal light return — those are judged with a Heart & Arrow scope and an AGS ASET scope. It is a good example of how a certificate grades categories, while beauty judgement reads the stone. That distinction — document versus eye — runs through all professional gemmology.
Does Raffles GemLab sell Type A jadeite in Singapore?
Yes — the retailer states it specialises in high-quality Type A Burmese jadeite (untreated natural jadeite).
What is a GIA triple-excellent diamond?
A diamond graded Excellent in cut, symmetry and polish on its GIA report. As Raffles GemLab's own guidance notes, triple-excellent is a category grade — heart-and-arrow symmetry and light return are judged separately with dedicated scopes.
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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.