Emerald, ruby and tourmaline, traded from Dubai
Ariana Precious Stones is a trading house in Dubai, supplying wholesale parcels and exceptional single stones in emerald, ruby and tourmaline. Never treated, eye clean, rough or cut, and delivered by hand. Large organisations and large deals.
Capability
That is not a slogan. It is what a deep stock and a wide reach across the trade buy you: we are not limited to one parcel or one origin, and we are not limited in scale either.
From clean commercial goods a workshop can buy by the dozen, up to single collector stones that reach the market only a few times a year.
Single stones from commercial weights up to museum pieces. Giant stones do reach the market — rarely, but they do, and when one does we are among the houses it is offered to.
We cut our own, so shape is a decision rather than a constraint. Send a template and we will work the rough to it.
Wholesale lots by weight, sized to whatever you actually run. We supply by the kilo — hundreds of thousands of carats where the material allows — and we have never yet been asked for a parcel we could not fill. Tell us the tonnage and we will tell you how long it takes to put together.
The house
Most coloured stones reach a buyer through several hands, each one blurring what the stone is and what was done to it. We buy carefully, hold what we sell, and describe it exactly.
Ariana Precious Stones is a trading house in Dubai. We buy emerald, ruby and tourmaline through the established international trade, examine every stone ourselves before it is bought, and present it to buyers with everything we know about it in writing. What you are told about a stone is what we have seen for ourselves — not what a seller three steps back chose to pass on.
The result is a register of goods that is smaller than a wholesaler's and considerably more certain. We would rather show you forty stones we can account for completely than four hundred we cannot.
The collections
Emerald, ruby and tourmaline ask different things of a buyer: different geology, different clarity, different ways to go wrong. We hold all three in depth, and we judge each on its own terms.
Colombian, Zambian and Brazilian emerald, from a warm grass green to a cooler, slightly bluish tone. Bright, crystalline, and never oiled — which for emerald is the hard part.
Explore emeraldsUnheated ruby from Mozambique and East Africa, soft pink through to a full, saturated red. Unheated is the rare part: almost all ruby on the market has been through a furnace.
Explore rubiesIndicolite blues, lagoon blue-greens, rubellite and bicolour — the widest colour range of any gem species, and the hardest to match across a suite.
Explore tourmalineWho we work with
Wholesalers, manufacturers, auction houses, institutions and established dealers — and private buyers who are buying at that level. What matters is the size of the deal, not the letterhead. We trade in wholesale lots and exceptional single stones, and we deliver by hand, never by carrier.
We do not take small orders. If you need one or two modest stones, a retail jeweller will serve you far better than we will — and we will tell you so rather than waste your afternoon. Come to us when the figure is serious and we will give you our full attention.
Rough or cut
Some clients want the crystal as nature left it. Some want it finished to a drawing. We are set up for both, and neither is a sideline.
Graded, sorted parcels of emerald, ruby and tourmaline rough, priced by parcel with our own honest read on likely yield rather than an optimistic one. Specimen and museum-grade crystals are set aside intact rather than cut.
Finished to your specification, or cut to the stone where the rough asks for it. We cut our own material, so shape is a decision rather than a constraint — and matched suites can be taken from a single crystal, which is the only reliable way to hold colour across a set.
The benches
This is not a logistical footnote. It is why we can quote competitively on a production parcel and still give an important single stone the time it needs — and why nothing needs to be improved in a furnace afterwards.
Guangzhou. Southern China's jewellery-manufacturing centre, with the bench capacity to match. Matched lines, repeating production orders and calibrated goods at scale — without the stone ever changing owner along the way.
Chanthaburi. The town has cut and graded more ruby and sapphire than anywhere on earth, and the eye there for a red is unmatched. We use its cutting benches and its graders — not its burners. Nothing of ours goes near a furnace.
How we grade
Two claims that are easy to make and easy to check. Here is what they mean technically, and why one of them is harder than it sounds.
The trade sorts coloured stones into three clarity types. Type I is usually free of eye-visible inclusions — aquamarine, morganite, kunzite. Type II is usually included: ruby, tourmaline, spinel, garnet. Type III is almost always included, and emerald is the type specimen for it.
That classification is why almost all commercial emerald is oiled: the fractures are there, and oil hides them. An eye-clean Type III stone that has never seen oil is not a better version of the same thing. It is a different category.
Nothing. No heat, no oil, no resin or fracture filling, no diffusion, no irradiation, no dye, no glass residue. Not on emerald, not on ruby, not on tourmaline.
This costs us material — a great deal of rough that others would improve, we simply do not sell. What it buys you is a stone that tests clean at any laboratory in the world, holds its value under later scrutiny, and cannot be re-graded downward when the oil dries out in fifteen years.
Optical and physical constants for the three species we hold. These are properties of the material, not claims about our stock — any laboratory will measure the same figures.
| Species | Refractive index | Birefringence | Specific gravity | Mohs | Clarity type |
|---|---|---|---|---|---|
| Emerald (beryl) | 1.577–1.583 | 0.005–0.009 | 2.67–2.78 | 7.5–8 | Type III |
| Ruby (corundum) | 1.762–1.770 | 0.008–0.010 | 3.97–4.05 | 9 | Type II |
| Tourmaline (elbaite) | 1.624–1.644 | 0.018–0.040 | 3.01–3.11 | 7–7.5 | Type II |
Corundum has a specific gravity around 4.00 against beryl’s 2.72. A 25 ct ruby and a 25 ct emerald are not the same size — the ruby is visibly smaller. Buyers working from carat figures alone get caught by this constantly.
Tourmaline is strongly pleochroic and its birefringence runs as high as 0.040. Colour down the c-axis is far deeper than across it, so a dark indicolite is cut with the table close to perpendicular to the axis to open it up, and a pale one the other way. Cut it wrong and you have wasted the crystal.
Marble-hosted corundum forms in a low-iron environment. Iron quenches fluorescence; without it the chromium fluoresces strongly red under ultraviolet and in daylight. It is why the classic marble-type rubies have the reputation they do, and it is a property of the geology, not of any treatment.
Origins
A handful of countries produce most of the world's fine emerald, ruby and tourmaline, and each leaves its own mark on the stone. What an origin on a laboratory report means, and why it moves the price.
Map shown for orientation only; not to scale.
Where we are
The company is registered in Dubai and run from there: buying, grading, invoicing, and the hand-carried deliveries that leave from it. Cutting is done in Guangzhou in China and in Chanthaburi in Thailand, and nowhere else.
Cutting: Guangzhou in China · Chanthaburi in Thailand.
Local times update live. The status dot is an indicative office-hours guide only — write at any hour and we will answer when the desk opens.
The process
Six stages, each one documented. You can enter the process at any point — buy rough, buy cut, or commission from a specific parcel.
Every stone and parcel is examined by us before it is bought, and anything we cannot describe with confidence is turned down. What enters our stock is recorded with everything that is known about it.
Every parcel is opened, weighed and graded under controlled light. Colour, clarity, and likely yield are assessed before a single stone is committed to the wheel.
We cut for colour and weight retention rather than to a template. Where a piece of rough wants to be a long emerald cut rather than a round, that is what it becomes. Stones go to whichever of our two cutting centres suits the work — the workshops of Guangzhou in China, or Chanthaburi in Thailand — and you can also stop here and take the parcel rough. The finest single stones are cut by hand. Nothing goes near a furnace at either.
Certification is acquired on request, from whichever recognised laboratory you name — identification, origin opinion and confirmation that the material is untreated. We do not pad the price with reports nobody asked for, and we will not object to any laboratory you choose.
Goods leave Dubai under correct declaration and are cleared into the destination market with the paperwork your own compliance team will ask for.
We do not ship. A member of the house travels with the goods and places them in yours — your office, your vault or your bank. Nothing of ours goes into a courier network, and nothing changes hands without one of our people present.
Assurances
No heat, no oil, no resin, no fracture filling, no diffusion — on anything, ever. For emerald that is a genuinely uncommon position: the species is graded Type III, meaning it is almost always included and almost always clarity-enhanced. Ours is not. Every invoice states it.
Origin is stated in writing on every invoice, as far as it can be supported: with an independent laboratory opinion where one exists, and marked plainly as unconfirmed where it does not. We never claim an origin we cannot stand behind, and we price the stone accordingly.
Goods are hand-carried by our own people and handed over in person, insured for the whole journey. Every negotiation, viewing and settlement happens face to face, in a secure setting of our joint choosing. Title and risk are set out clearly on the invoice before anything moves.
Invoices, export declarations and laboratory documentation are issued as a matter of course, structured for your own due-diligence and anti-money-laundering obligations.
Established trade clients may view stones on memo or receive high-resolution imaging and video first. We would rather you were certain than merely persuaded.
Quotes are given per carat, per stone and per lot, in the currency you settle in, with delivery and insurance itemised. No commission is added downstream — because there is no downstream.
Experience
Anyone can be shown a parcel. Knowing which stones in it are worth having is a different skill, and it is the one our clients are really paying for.
It is knowing which origins give the cool blue-green rather than the grey one, and which parcels only look as if they do. Reading a piece of rough and calling the yield before it goes near a wheel. Recognising when an “untreated” tourmaline has been quietly heated, or when an emerald has been oiled a great deal more heavily than the seller is admitting. Knowing when to buy, and when to sit the market out entirely.
That judgement is why clients send us specifications rather than shopping lists. It is also why we will tell you when the stone you have described does not exist at the price you have in mind — which is information you can act on, unlike a quote you cannot trust.
The studio
Four tools built out of how we actually assess material — not decoration, but the questions every serious buyer asks us first.
See what a carat weight really looks like at true size on your own screen, calibrated to the millimetre against a bank card. Learn the colour range we work in and which hues are genuinely scarce. Compare what a step cut does to a colour against what a brilliant cut does. Then write a specification precise enough for us to quote against.
Services
Much of our work is not a stone off a list. It is a manufacturer who needs a repeating monthly parcel, or an auction house that wants first refusal on major stones as they come in.
We handle standing supply mandates, calibrated goods for production floors, graded rough parcels by weight, and first refusal on exceptional single stones. Where a client needs a stone certified by a particular laboratory, we arrange it before delivery.
Enquiries
Send a specification — species, colour, size range, quantity and budget — and we will reply with what we hold, what is coming, and an honest note on what will be difficult to find.
