Bangkok
Buying gemstones in Bangkok without the guesswork
Most of the world's rubies and sapphires pass through Thailand to be cut, treated and traded, and Bangkok is where they change hands. That makes it a good place to buy a stone, if you know where the trade really happens, how to read the paperwork and how to pay without handing over money on trust.
Where the trade is
Where the Bangkok gem market actually is
The trade sits in a few streets, and most of it is wholesale: dealers selling to dealers, often by appointment and rarely from a shop window.
Silom and the Jewelry Trade Center
The Jewelry Trade Center tower on Silom Road and the streets around it hold dealers' offices, cutters, gem laboratories and vault services. Many offices sell only to the trade.
Mahesak Road
A few minutes' walk away, the lanes off Mahesak Road, up toward Surawong Road, hold hundreds of small dealers, cutters and setters, often in unmarked offices up a flight of stairs. This is where stones change hands between professionals.
Chanthaburi
A few hours' drive east, Chanthaburi's gem market runs every Friday to Sunday: buyers sit at tables while brokers bring parcels of rough and cut stones. Much of Thailand's heat treatment happens here too. It is a market for professionals.
Thailand once mined many of its own rubies and sapphires, around Chanthaburi and Trat and, for blue sapphire, at Bo Phloi in Kanchanaburi, and still produces some. Most stones sold in Bangkok today were mined elsewhere, in Myanmar, Sri Lanka, Madagascar, Mozambique and East Africa, then cut or treated in Thailand. A Thai ruby or sapphire is a real origin with its own look, usually darker, and a lab report can state it when origin is requested.
The fair
The Bangkok Gems & Jewelry Fair
Twice a year the trade meets at the Queen Sirikit National Convention Center (QSNCC) for the Bangkok Gems & Jewelry Fair, the easiest time to see many dealers, cutters and laboratories under one roof.
| Edition | Dates | Venue |
|---|---|---|
| February 2027 | 23–27 February 2027 | QSNCC, Bangkok |
| September 2027 | 7–11 September 2027 | QSNCC, Bangkok |
As of October 2026, these are the organizers' published dates. The organizers set the dates, the opening hours and the entry rules; check their announcements before you book travel. A fair is a good place to meet dealers and see a great many stones quickly. It is not a reason to buy on the day without the checks below.
Before you pay
How to check a stone and its paperwork
A stone is worth what you can prove about it. Four checks cover most of the risk.
- 01
Ask for the report first
A gem laboratory's report states the species, natural or synthetic, weight, measurements, treatment and, if requested, origin. No report, or no reason given for not having one, is information too.
- 02
Look the number up yourself
Check the report on the issuing laboratory's own website, typed in by you: not through a link, QR code or phone number the seller provides.
- 03
Match the report to the stone
Weigh and measure the stone against the report. A lookup proves a report exists, not that this is the stone it describes.
- 04
Get an independent test
For an expensive stone, make the sale conditional on a test at a laboratory you choose. Bangkok has several, among them the government-run GIT and offices of international labs.
The gap between a genuine report and the stone in your hand is what Everystone's passport closes. The report describes a stone; the passport proves it's this one.
Red flags
The scam patterns to walk away from
Bangkok's gem scams are old, well documented and follow a script. You don't need to know who runs them, only how they start.
- A stranger you didn't seek out, a friendly local or a driver offering a cheap ride, tells you a temple or sight is closed today and suggests a gem shop or a “government” sale instead.
- The price is special for today only: a promotion, a tax-free export quota, a holiday sale that ends tonight.
- You are told you can resell the stones at home for double. No honest seller promises you a profit; when resale is the pitch, it is the scam.
- The shop offers to ship the stones for you once you have paid the shop, so you leave without them. What arrives, if anything does, may not be what you chose.
- The certificate comes from the shop itself, or from a “laboratory” you can't look up on your own.
- You are hurried, kept from checking, or pressed to pay before a test.
If any of this happens, stop, leave without paying, and report it to the Tourist Police on 1155.
Paying
How to pay without trusting the seller
Pay so that the money reaches the seller only once the stone has been checked against what you were promised.
Protected payment, not a transfer
On Everystone your money is held, not paid to the seller. No seller is paid before the stone has been checked against its description: by you on delivery, or by an independent lab before it ships.
Time to check
Before you confirm, ask for more photos or video, or arrange an independent lab test.
A label on every lot
Each lot on the shop states how far it has been checked: Seller-declared, Partly verified or Full verification. Nothing is rounded up.
What it costs the buyer: a premium of 7% under $1,000, 5% from $1,000 to under $5,000 and 3% from $5,000, plus a settlement fee of 3% (at least $75), included for stones held in custody. Browsing costs nothing and needs no account.
Questions people ask
When is the next Bangkok Gems & Jewelry Fair?
As of October 2026, the next editions are 23–27 February 2027 and 7–11 September 2027, at the Queen Sirikit National Convention Center (QSNCC). The organizers set and publish the dates; check them before you travel.
Is it safe to buy gems in Bangkok?
Yes, if you buy the way the trade does: from established dealers, with a report you have looked up yourself, and with payment that is released only when you have the stone. Most problems start with a stranger's tip, a “today only” price or a promise of resale profit.
Where do dealers buy rubies and sapphires in Bangkok?
Around Silom Road (the Jewelry Trade Center and the lanes off Mahesak Road) and at Chanthaburi's weekend market. Much of that trade is wholesale and by appointment.
Can I buy from Bangkok dealers without traveling?
Yes. The shop lists stones from verified sellers, each lot states how far it has been checked, and the money is held, so no seller is paid before the stone has been checked against its description. Stones ship by courier with transit insurance available, or stay in the vault if they are held in custody.
Are Bangkok gem lab reports reliable?
Bangkok has several established laboratories, among them the government-run GIT and offices of international labs. Whichever lab issued a report, look its number up on that lab's own website and make sure the report describes the stone in front of you.
Buy the stone, not the story
Every lot on the shop says how far it has been checked, and every purchase is a protected payment. You can browse without an account.