Plan a visit
Submit a stone for
testing.
All gemstone submissions are received in person at our Bangkok headquarters. Walk-in and appointment-based submissions are welcome during operating hours.
Opening hours
Mon – Fri
09:00 – 18:00 ICT
Saturday by appointment only.
Closed Sunday and Thai public holidays.
All times are Indochina Time (ICT, UTC+7).
Location
Jewelry Trade Center,
6th Floor.
Our laboratory occupies suites 7 and 8 on the 6th floor of the Jewelry Trade Center (JTC), one of Bangkok’s principal gemstone trading buildings on Silom Road.
Address
919/7-8, 6th Floor
Jewelry Trade Center
Silom Road, Silom, Bangrak
Bangkok 10500, Thailand
Getting here
The Jewelry Trade Center is on Silom Road between Soi Silom 15 and Soi Silom 17. The nearest BTS station is Surasak (exit 3, approximately 300 metres). Enter the building from the Silom Road ground-floor entrance and take the lifts to the 6th floor.
Submission process
What to expect
at the laboratory.
Submitting a stone for analysis is straightforward. Specimens are received in person at our 6th-floor counter. You do not need a prior appointment for standard submissions, though one is recommended for large parcels or Saturday visits.
01
Bring your stone.
Transport your gemstone in a secure container. Individual stones should be wrapped in diamond papers or placed in gem jars. For parcels, use a sealed parcel paper or zip-lock bag with a clear label. We do not require insurance documentation at intake, but recommend you insure high-value specimens in transit.
02
Register at the counter.
At the reception counter, our team will log your specimen, confirm the service you require, and issue a receipt. Each stone is assigned a unique reference number that tracks it through the analytical workflow. You will receive a copy of the intake record with the expected completion date.
03
Analysis and reporting.
Standard turnaround is five to seven working days from the date of submission. Your stone is examined using our analytical workflow of six advanced techniques: microscopy, LA-ICP-MS, EDXRF, Raman spectroscopy, UV-VIS-NIR, and FTIR. The specific combination of techniques depends on the service requested. We will contact you if any findings require discussion before the report is finalised.
04
Collect your report.
When analysis is complete, we will notify you by phone or email. Your stone and report can be collected in person from our 6th-floor reception during opening hours. Please bring your intake receipt and a form of identification. Payment is due at the point of collection.
Arrange your visit
Tell us what
you are bringing.
Walk-in submissions are welcome during opening hours, but a note in advance helps for large parcels, Saturday visits, or anything time-sensitive. Tell us the stone and the service you need, and the laboratory will confirm the details.
Before you visit
Pricing and
service selection.
Our full fee schedule is published online. Review our services and pricing before your visit so you can confirm the analysis and report format you need at the counter.
Turnaround
Standard turnaround is five to seven working days. Priority service may be available on request for time-sensitive assessments.
Scope
The Bangkok laboratory provides identification, origin determination, and treatment analysis for coloured gemstones. Diamond and jewellery testing will be offered at our Surat laboratory when it opens.
Contact
+66 2 630 0001
info@icagemlab.com