Reviewed by Hasitha K. Balasooriya · Managing Director, Gemszen (Pvt) Ltd · 8 years of gem-industry experience · Updated 6 October 2026
Gem certificate එකක් බැලීමේදී රසායනාගාරයේ නම පමණක් නොව report number, ගල් වර්ගය, natural/synthetic තත්ත්වය, treatment, බර, මිනුම් සහ security verification පරීක්ෂා කළ යුතුය.
Information commonly shown
A coloured-stone report may record the item’s identity, whether it is natural or laboratory-grown, detectable treatments, weight, measurements, shape, cutting style, colour and photograph. Some services provide an origin opinion for eligible gemstones.
A report is not a price guarantee
Laboratory reports provide gemological findings. They do not necessarily state commercial quality, current selling price or future investment return. The stone must still be evaluated for beauty, condition, market demand and value.
Verify the document
Match the report details with the actual stone, check the report number through the issuing laboratory when online verification is available, and inspect security features. For high-value transactions, use a reputable independent laboratory.
Frequently asked questions
Does every gemstone need a laboratory report?
Not every low-value stone requires one, but reports are useful when identity, treatment, origin or transaction value creates meaningful risk.
Does a report prove the stone belongs to the seller?
No. It describes the submitted item. Ownership and legal title are separate matters.
Can a report identify treatment?
Reputable laboratories report detectable treatments within the limits of their examination and service.