Laboratory
Hong Kong Jade & Stone Laboratory (HKJSL)
Hong Kong, Hong Kong SAR
Jadeite (fei cui); ruby, sapphire, emerald, alexandrite
The Hong Kong Jade & Stone Laboratory (HKJSL) specialises in jadeite (fei cui), a major part of the Hong Kong and Chinese jewellery trade.
What it does
Jadeite testing, distinguishing natural untreated jadeite ("A jade") from bleached and polymer-impregnated ("B jade") and dyed ("C jade") material, and testing of ruby, sapphire, emerald and alexandrite.
Using any laboratory
- Ask what the report will state (identity, treatment, origin, grade) and how long it takes; turnaround and fees change.
- Check a report online with the laboratory's own report-check service, and match the stone to the report.
- Reports from different laboratories can differ, especially on colour grades, treatment and origin. A report is an opinion based on the tests made, not a valuation.
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