How to Buy Gemstones in Bangkok, Thailand?

Buying a color gemstone in Bangkok or Thailand can be both very rewarding or horrifying experience.  However, when actually reading online in many travel forums or discussion boards, it will seem their are more horror “Thai Gem scams” story tales then the pleasant rewarding ones.

It has always been a fact that negative news like revolutions, accidents, natural disasters or murders are more popular then reading about good experiences people have because how it affects us emotionally.   The Thai Gem scams does exist, but this does not mean you should not consider buying gemstones in Thailand.

Like many countries around the world, they are always bad intentional people around trying to take advantage of foreign tourists ignorance so they can earn a quick buck.

You should of course be careful when you are approach by these scam artists and to learn how to avoid them.   More information regarding these scams can be read on —

However, the purpose of this article is not to inform you how to avoid blood sucking vampires or gem scam artists, but to explain to you what you should do when you want to buy a gemstone in Bangkok or Thailand?

First lets get the facts straight regarding buying gemstones in Bangkok or Thailand and why you should consider it.

Largest Gemstone Market
Bangkok is one of the largest and major markets for trading all types of color gemstones including but not restricted to rubies, sapphires, tourmaline, garnets, peridot, spinel, topaz and jade.

Some stats – The Thai gems and jewelry industry in 2016 generated more than US$14 billion for the Thai economy. The industry is regarded as being the third largest foreign income earner for the country.

Office Located Here
Almost all color gemstone traders, wholesalers and jewelry store buyers have an office based here or have a local partner because it is in fact cheaper to buy color gemstones here then anywhere else in the world.

Major Treatment and Manufacturing Hub
Almost all color gemstones rough from around the world come to Thailand to get cut, treated and manufactured to jewelry because of their strong expertise.

Thai craftsmen are consider the best cutters in the world and have learnt how to cut in pure precision due to their proximity to Burma, the major source of expensive color gemstones like rubies, sapphires, and jade.

Many gemstone source countries like in Burma, Africa, South America, or Sri Lanka have gem cutters but lags years behind Thai cutters. Thai craftsmen are also considered the experts in heat treatment of very expensive rubies and sapphires, which is a  very difficult skill to acquire.

Major Gemstone Trading Source
Again, the most important fact is Thailand is the major source for trading color gemstones.  From my experience, it is actually even cheaper to buy gemstones in Thailand then from source countries.

At first this point might sound counter intuitive.  Why will it be more cheaper to buy a gemstone in Thailand when it doesn’t source most of these stones?

A better way to understand this is by comparing another industry which we all know about very well like buying an Apple iPhone.  It is given fact that iPhone component’s come from around the world like silicon chips, memory chips, touch screen materials, etc., and are assembled either in Taiwan or China.

Therefore, it should be logical that it should be cheaper to buy the Apple iPhone either at the source of these components or at the assembling plants in China or Taiwan.

However, the fact is, the cheapest and most competitive market to buy iPhone is still the United States of America (USA) because of one sole reason that it is the major trading place and largest market for these devices.

Large demand combine with competition has always proven that the cheapest places to buy anything is where the item is traded the most.  You can ask anyone in the color gemstone business about Thailand and they will agree the fact that Thailand is one of the largest and major market for color gemstones around the world.

Negative: Treatment Hub
But, here are some things you do have to worry and avoid when buying gemstones in Thailand and you should keep this in mind when you do decide to buy a gemstone from any wholesaler or retailer.

  • Thailand is consider the experts in all the new treatments in color stones including heat treatment, synthetics, glass filled rubies, diffused color treatment sapphires, irradiation topaz, dyeing, waxing and oiling emeralds, etc.

Negative: Not Diamond Trading Hub
Thailand does not have strong expertise in diamonds.  Diamonds are traded at a premium price compare to more larger and competitive markets like Antwerp, New York, Mumbai or Tel Aviv.

Now with all these facts in mind, how do you go about in buying a gemstone in Thailand?

In Bangkok –

A good starting point is to first check the Thai Gems & Jewelry Trader Association (TGJTA) website to get a list of gemstones dealers & traders in Bangkok (

This site is not completely updated and information is not 100% accurate, but it is better then having nothing in hand.  However, the list is quite extensive and it can take you weeks to look at it.  But, of course if you do have the time and do your homework it can be very rewarding.

For most higher end color gemstones (rubies, sapphires, emeralds, tourmaline, etc.,) you should check the end of Silom area.  A good starting point will be  Jewelry Trade Center, JTC, ( which is the fourth largest building in Bangkok, so it is hard to miss.

JTC Entrance (old) – 2012 Image

In the building for example, it houses the TGJTA office, Asian Instituted of Gemological Sciences (AIGS) gem lab,  GemResearch Swisslab (GRS) gem lab and also multiple gemstone wholesalers and dealers.

Also, on the ground floor of the building you will see “gem booths,” and is a good place to start practicing your art of negotiating skills.

Other places to visit are areas next to JTC, which is the end of Silom, Suriwong, and Bangrak.  This area stretches from JTC to the Chao Phyra river.

Their are lines of gemstone wholesales shops around here with over 1,000 dealers.  Most are concentrated in soi Mahesak Road (between Silom and Suriwong),

Soi Mahesak Road
Entrance to Soi Mahesak Road

Warner Building in Mahesak, Executive House in Suriwong and Gem Tower in Bangrak. Most dealers here will be honest and won’t sell you fake stones without their own knowledge, but you do have to be careful when negotiating price and do double check with cheap local independent lab (more details is provided below) if the stone you are buying is what is stated.

Gems Tower Building
Gem Tower Building

For “semi-precious” stones or synthetics which includes garnets, citrine, amethyst, cubic zirconia, etc., the best place to buy these stones is near Chinatown a place nicked name “Wat Koh,” which the official name of the lane is called Songwad Road, in Samphantawong.

The lane itself is quite crowded, but you will definitely get very good deals and most shop owners are quite reliable.

In Chanthaburi, Thailand – 

Chanthaburi is located 280 kilometers southwest of Bangkok and is consider the cutting, manufacturing and treatment center for color gemstones in Thailand.  It started of in the 1960s till 1980s as the Thai gemstone source of corundum (sapphires and rubies).

But, these sources were quickly depleted because of extensive use of modern equipment and major mining operations.The town however, adapted itself by learning in those 20 years how to treat low quality rubies and sapphires to make them look spectacular.

This again is done by new treatments like chemically diffused, glass-filed, irradiation, etc.  This expertise has made it the source for low quality ruby and sapphires.

You can buy gemstones here in the middle of town where you can rent tables or go to reliable dealers offices who will call brokers to bring you the gemstones you require.

GIA Class in Chanthaburi
Memory lane – My GIA class renting a table in Chanthaburi Market

Chanthaburi is only open from Friday, Saturday and Sunday and usually most gemstone dealers from Bangkok go there.

The typical stones you will find here is usually of lower grade then in Bangkok because the higher end usually go straight to dealers in Bangkok.

Also, dealers in Chanthaburi do come to Bangkok in the weekdays (Silom area again) and so you can see the same stones in Bangkok as well.

Buying Guidelines

Once you have decided where you want to buy, below are some guidelines in what you should do when you are at a dealers, retailers or gem market:

Check Credentials
The credentials of the office and retailer is true and correct – again this does not mean bigger offices or retail shops are better.

Reliable wholesalers and retailers will have business licenses in a frame at the front of their office and large sign of their company name at the front door.

This is required by law in Thailand if you are operating a business.  Also, most reliable dealers will be registered in the TGJTA Directory as members and will also be listed on their website (link is provided above).

Neutral Light Setting
Make sure the place where you buying the gemstone has neutral light.  This means normal sunlight (from the window) and or quality “daylight” artificial lighting which is recommended by GIA when checking color for gemstones.

This is important because in yellow light rubies will look redder while in “strong” unnatural white light makes darker emeralds and sapphires look lighter and better.

Ask Questions
Ask specific questions to dealers or sales person about the gemstones and see how they respond.  This is were some common sense and understanding people skills come in handy.  Some examples of pointed specific questions are:

Question One: Treatment
Has this gemstone been treated?

If no, can you show me how you know or do you have a certificate?

If yes, in what way has it been treated? Has it been heated, chemically diffused, irradiated, dyed, oiled, waxed or glass-filled?

Question Two: Experience
What experience do you have in dealing with gemstones?  How long have you been in the trade for?  Do you have any credentials like graduate gemologist degree from GIA or anyone in the office who does?  If not, how can you tell if a stone is natural or treated?

Question Three: Return Policy
Do you have a return policy if the gemstone you stated is not exactly what you sold?  If the answer is NO, just walk away right now.

Question Four: Third Party Certification
I am interested in buying this stone but it is currently not certified.  Can you get it certify for me at local lab here or specifically at Gemological Consultancy, Tokyo Gem Laboratory, Gemological Consultancy or another reliable third party lab?

If the dealer answer is NO, you should walk away as it only cost US$10 to do it. (more details provided in the next point)

Get Third Party Certificate
If the stone is not certified, it is a good idea in getting it certified in smaller local labs in Bangkok or Chanthaburi to get a quick but reliable idea in what type of stone you are acquiring.

These labs are usually 95% accurate and have a lot experience in dealing with new treatment stones.   Both labs which I listed below have been used personally by me many times and cost only US$10 (Thai Baht 300).  Both are located at the end of Silom road where almost all the dealers are located:

a) Name: Tokyo Gem Laboratory (Thailand) Co., Ltd.  Address: 987 Rama Jewelry Bldg., 3 Fl., Silom Rd., Bangrak, Bangkok 10500 – Telephone: +662-635-2030-2

b) Name:  Gemological Consultancy International.  Address: JTC,  341 A/A, 3RD Floor, Silom Road, Bangrak, Bangkok 10500 – Telephone: +662 630 0699, +66 83 916 7158

Tokyo Lab Certificate Sample Front
Tokyo Lab Certificate Sample Back
Tokyo Lab Certificate Sample Back
Tokyo Lab Certificate Sample Front

Trust, No Pressure!
If a dealer or salesperson is trying to sweet talk, pressure or push you to buy the stone, just walk away.  Until you are satisfied and trust a dealer you should never buy a gem stone from them

Finally, negotiate, negotiate, negotiate – It is always important to try to negotiate the price with dealers.  A good starting point is 50% below their asking price and see how they react.

Again, this skill takes time and practice and sometimes their are good deals without negotiating.  However, you have nothing to lose in asking for a better price.

Contact us today to get all your wholesale gemstones, diamonds and jewelry needs.  We can Source, Search and Supply anything you require.   

What will you get if you contact us

  • Start a conversation with us at
  • Get wholesale and highly competitive prices of gemstones & diamonds from anywhere through our extensive network of contacts around the world
  • All stones sold by us is verified in house by our GIA Graduate Gemologist or certified
  • We provide personalized service and NOT the same old “One Size Fits All” Approach

You can learn more by clicking here or image below


25 thoughts on “How to Buy Gemstones in Bangkok, Thailand?

  1. Gem stones are great for jewelries, i personally love JADE and Emerald. they are actually luxurious and very

  2. I love gemstone cutting policing and general knowledge about gemstones i need to learned get updated information about it…

  3. Hello !

    I want to order rings from you i will sale
    to tourist. At least 200 rings.

    Please give me acess to your ordersite.

    Yours sincerely

    Hakan Sall

    1. Hello sir I have some emerald stones so l want to sell them in the market of Bangkok or chantaburi , Thiland. These are some of Panjshir and some are of Sawat and gilgit. Some pieces are transparent and made different shapes . Some are in fast green in color , some have black hair in green emeralds and they looking very precious and beautiful by its naturally looking. If u help me give me a way I shall thank ful to u.

    2. Am bought but yet to collect from this stall you mentioned.
      why did you say is a scam? Price or gems not real?
      Pls share precisely & why no police report?
      How a scam company can continue to cheat for years.

  4. hi there i am planning to buy a 5 layer multistring beads necklace in ruby, jade, sapphire beads. Do suggest some good shops and also do let me know the price point around the same

    I plan for a short trip to thailand and plan to pick this up. Do let me know.

  5. Thank you for this detailed article,

    I am a jeweler and stone dealer but do not trade precious, faceted stones. I will certainly check out the point you mentioned near china town, but am wondering if the chanburatri market is pretty much only precious gem stones, or if i will also find a nice selection of semi precious cabochons. Before coming to thailand a jeweler friend of mine said i must look for some beautiful garden quartz which happens to be a stone i love very much and is supposedly sourced near the boarder with myanmar, do you know if it might be worth it to check out chanburattri considering my interests? Thanks anyways for the info, and if i get a reply inwill be oh so happy!!

    1. Hi Opalo,

      Chanthaburi is always worth a visit if you are interested in buying or searching for both precious or ‘semi-precious’ gemstones.

      However, I do recommend to go offices which have ‘internal laboratory services’ to make sure what you are buying is the actual gemstone and not some synthetic, plastic or glass. They do charge a small fee for buying through their offices, though the cost is minimal compare to the risk in buying the wrong item.

      Tarun Gupta, Graduate Gemologist (GIA)

  6. You informed me in a nice.way how to deal with gem dealers before buing gems for new entrants like me i am in need of gem rough please suggest me to how to get gem rough for my collectible purpose.please provide me relevant informatoin in getting all type of gem rough.

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