Identification Report
Approximately 2–5 business daysGemstone identification, natural/synthetic or imitation determination, and precise weight and dimensions where the specimen permits.
Bangkok main laboratory
Submit with clarity. Ship with confidence.
Every physical gemstone submission is examined at ICA GemLab’s main laboratory in Bangkok. Review the process before dispatching any loose stone or mounted jewel.
Start a submissionEstimated turnaround
Timeframes built around the analysis.
Turnaround starts on the first business day after physical receipt, acceptance and registration in Bangkok. International trade fairs, complex findings or additional testing may extend these estimates. Express service is available on request, subject to confirmation.
Treatment Analysis
Approximately 3–7 business daysInvestigation of detectable heating, glass or resin filling, irradiation and diffusion treatment using appropriate analytical methods.
Origin Determination
Approximately 5–10 business daysAn expert opinion on geographic origin based on converging microscopic, spectroscopic and trace-element evidence.
Monograph / Premium Report
Usually 3–6 weeksIndividually scoped documentation for exceptional, historically significant or particularly rare gemstones and jewels.
The submission route
Bangkok only. By prior arrangement.
- 01
Submit the enquiry
Provide the material, approximate weight, loose or mounted condition, requested analyses, declared value and required date.
- 02
Receive the Bangkok address
The automatic confirmation email provides the verified Bangkok delivery address and core shipping requirements. Wait for the laboratory to confirm acceptance, scope and routing before dispatch.
- 03
Arrange insured transport
Use a specialist valuables courier with continuous door-to-door cover. Ordinary post and standard parcel services must not be used.
- 04
Bangkok intake
After physical receipt and condition control, the specimen is registered and the estimated turnaround begins on the next business day.
Receiving locations
Only Bangkok accepts gemstones.
Dubai, Hong Kong and Taipei are client service offices. They cannot accept, store or forward physical gemstones. Items addressed to these offices must be refused for security and customs reasons.
The confirmed receiving address is ICA GEM LABORATORIES COMPANY LIMITED, 919/7–8, 6th Floor, Jewelry Trade Center, Silom Road, Silom Sub-District, Bangrak District, Bangkok 10500, Thailand. It is also sent automatically after a successful online enquiry.
Loose or mounted
Loose stones are preferred.
A loose stone permits accurate weighing and measurement and unrestricted observation of inclusions and surface features. Mounted gemstones can be examined in Bangkok, but metalwork may conceal evidence or restrict chemical analysis.
Where relevant, the report will record limitations such as an estimated weight or examination restricted by the setting.
Transport & insurance
Protect the full journey.
The client bears the risk of loss, theft or damage during inbound and return transport. Use a specialist valuables courier—such as Ferrari Group, Malca-Amit or Brink’s—capable of providing continuous door-to-door insurance to Bangkok.
After successful intake and registration, laboratory custody is subject to ICA GemLab’s applicable custody insurance and the coverage limits confirmed for the submission. A declared value is not a laboratory valuation.
Customs & return
Document the temporary purpose.
Customs documentation must clearly identify the contents as “Commercial Samples for Scientific Testing”. The client is responsible for correct declarations, permits, duties, taxes and temporary-import arrangements.
A Carnet ATA is strongly recommended where applicable and accepted by the relevant authorities. After analysis and payment, specimens are returned from Thailand by secured valuables courier, with the transport charge shown on the invoice.
Submission questions
Before anything leaves your hands.
Practical answers for a secure, properly documented submission.
When does the turnaround time begin?+
Turnaround begins on the first business day after the specimen has physically arrived at, and been accepted and registered by, the ICA GemLab main laboratory in Bangkok.
Can I send a gemstone to Dubai, Hong Kong or Taipei?+
No. These locations are client service offices and cannot accept, store or forward physical gemstones. All specimens must be sent directly to the main laboratory in Bangkok after submission instructions have been confirmed.
Can ICA GemLab examine a mounted gemstone?+
Yes, mounted gemstones can be examined in Bangkok. A setting may obstruct inclusions or restrict weighing and chemical analysis, so the report may state that the weight is estimated and the examination was limited by the mounting.
Which courier should I use?+
Use a specialist valuables courier offering continuous door-to-door insurance to Bangkok. Do not use ordinary post or a standard parcel service. The laboratory must approve the routing before dispatch.
How should the shipment be declared?+
Shipping documents must clearly describe the contents as “Commercial Samples for Scientific Testing”. The client remains responsible for correct customs declarations, temporary-import procedures, duties, taxes and any permits. A Carnet ATA may be appropriate for temporary import, subject to the rules of the relevant authorities.
How are gemstones returned?+
After completion of the accepted services and payment of the laboratory invoice, specimens are returned from Thailand by secured valuables courier. Return transport charges are shown on the invoice.