Oud in Bangkok: agarwood, oil and the Soi Arab merchants.

Why Southeast Asia matters to a Gulf buyer

Agarwood forms when a tree of the Aquilaria genus is wounded or infected and responds by laying down a dark, aromatic resin in the heartwood. The tree grows across mainland and island Southeast Asia, and the historic sources most prized in the Gulf, the Cambodian, Thai, Lao, Vietnamese and Indonesian regions, sit within a few hours of Bangkok. The Gulf is the world's largest consuming market for oud and has been for centuries, but it is not a producing one. Bangkok sits close to production, on established trade routes, with a resident community of Middle Eastern merchants who have worked the route for decades.

That closeness is the opportunity and it should not be overstated. Bangkok is not a wholesale source in the way Chanthaburi is for gemstones; it is a trading and distilling city where material from several countries changes hands. A knowledgeable buyer with time and contacts can do very well here. A visitor buying from a display case on a busy street is buying at retail from a merchant who knows exactly how much the buyer knows, and prices accordingly.

The Soi Arab trade

Sukhumvit Soi 3/1, universally called Soi Arab, running between Soi 3 and Soi 5 near BTS Nana, is Bangkok's established Middle Eastern quarter and the visible centre of the retail oud trade. Along it and in the small arcades off it sit perfumers and agarwood merchants, many of them Gulf or Levantine families who have traded here for a generation or more, selling chips, dust, incense burners, attars and dehn al oud in the small bottles the Gulf market expects. Money changers, Arabic signage, restaurants open late and a short walk to Bumrungrad complete the picture. Business is conducted in Arabic as readily as in Thai.

This is a genuine trade, not a tourist confection, and the better merchants hold serious material. It is also a market where price varies enormously between shops for indistinguishable goods, where a visitor's nationality and evident wealth are read within seconds, and where the same bottle can carry three different prices in one afternoon. None of that is dishonest; it is how the trade has always worked. It does mean that the buyer's knowledge, patience and willingness to leave are the entire negotiation.

Wood, oil and the grades

Two products, priced on different logic. Agarwood in solid form, chips, splinters and whole pieces, is graded on resin content, and the trade's rough test is buoyancy: high resin material is denser and sinks in water, which is the origin of the sinking grade language that commands the highest prices. Origin, age, the shape of the piece and the character of the scent when heated all move the price. Wood is burned on a mabkhara or an electric burner, and a heavy piece of genuinely resinous wood is bought by the gram in the same spirit as a gemstone.

Oil, dehn al oud, is distilled from agarwood and is priced by the tola, the traditional unit of roughly eleven to twelve grams that the Gulf market still uses. Quality here turns on the material that went into the still, the method and length of distillation, and the age of the oil, which matures and softens over years. Distillation is where adulteration happens: oils cut with carrier oils, with cheaper woods, with synthetic aroma chemicals, or blended and sold as a single origin. A pure oil from good material is expensive everywhere in the world, and a bargain price on a tola of dehn al oud tells you what you need to know.

Buying well

The mechanics of a careful purchase are the same ones an experienced Gulf buyer already uses at home, and they are worth restating because visitors relax abroad. Ask to smell the wood on heat, not cold, and ask for a fresh mica plate. Ask to smell oil on skin and to come back an hour later, because adulterated oils reveal themselves in the dry down as the top notes fall away and something flat or chemical remains. Smell no more than three or four things in a sitting. Ask where the material is from and how old the oil is, and note whether the answers stay consistent across two visits on different days.

On price, the discipline is to establish the market before buying anything. Visit four or five merchants, ask the price per gram or per tola for comparable material, and buy nothing on the first afternoon. Weigh in front of the buyer is standard practice for wood; ask for it. Ask for a written receipt stating the product, the weight or volume, the claimed origin and the price, which serves both as a record and as a mild test of confidence. Pay by card or transfer where the sum is significant. Politeness, patience and a willingness to leave the shop are worth more here than any technical test.

Plantation, wild, and the CITES question

Aquilaria is a protected genus. All species are listed in Appendix II of the Convention on International Trade in Endangered Species, which means international movement of agarwood and its products is regulated and, above the exemption thresholds set out in the convention and applied by each country, requires permits. Wild harvested material from natural forest is the source of most of the finest historic oud and is also the reason for the listing. A large and growing share of what is now sold, in Thailand and across the region, is plantation grown and artificially inoculated, which is legal, sustainable and, at the top end, increasingly good.

For a traveller the practical position is this. Small quantities of finished product for genuine personal use are treated more leniently than commercial shipments, but the thresholds and the paperwork are set by regulation and by the country you are entering, not by the merchant selling to you. If you are buying meaningful quantities of wood, or oil in volume, ask the merchant directly whether they can supply CITES documentation, and confirm the requirement independently with the CITES authorities in Thailand and in your own country before you fly. A merchant who waves the question away is not the merchant to buy volume from.

What we do for clients

Our role in this category is deliberately modest, because most clients know the product better than any office does. We arrange the afternoon rather than the purchase: a driver who will wait on Sukhumvit rather than circling, an appointment at a merchant's own premises rather than a street counter, a private room where a family can sit and smell properly without an audience, and a female staff member present where the family prefers it. Where a client wants distillation quantities or an ongoing supply relationship rather than a holiday purchase, that is a commercial arrangement with export paperwork attached, and it should be set up as one, with an invoice, a bank transfer and permits, not as an oversized cash purchase on a Thursday afternoon.

Agarwood comes from the genus Aquilaria, listed in Appendix II of CITES, so international movement is regulated and may require permits above the applicable thresholds. Confirm the current requirements with Thailand's CITES management authority and with the CITES authority of the country you are travelling to before purchasing in quantity, and declare the goods to customs on arrival.

This briefing is general information, not legal, tax or investment advice. Thai rules change frequently and individual cases differ. Verify current requirements with the relevant authorities, including the Immigration Bureau, the Board of Investment, the Land Department, the Department of Business Development and the Revenue Department, and take advice on your own facts before acting.