Buying a diamond in Hatton Garden: how the street actually works

Hatton Garden13 min readBuying guide

Most people arrive on Hatton Garden with a budget and no map. An hour later they have seen forty windows, been quoted six prices for what sounds like the same ring, and understood none of it. The street is not trying to confuse you — it is simply organised for the trade rather than for visitors.

Why the jewellers are here at all

The land takes its name from Sir Christopher Hatton, Lord Chancellor to Elizabeth I, who was granted the gardens of the Bishop of Ely’s London palace in the sixteenth century. The jewellers came much later, in the nineteenth, drawn by cheap workshop space, proximity to the City’s money and to Clerkenwell’s clockmakers, whose fine-tool skills transferred directly to setting stones.

What grew up was not a shopping street but a manufacturing district that happens to have shops at the front. That distinction explains almost everything a visitor finds confusing.

Who is who behind the doors

  • Diamond dealers hold stones. Most have no shopfront at all — they work upstairs, sell to the trade in sealed parcels, and never meet the public.
  • Bench jewellers and setters make and set. A setter may spend a career doing nothing but micro-pavé, and the best are booked weeks ahead by half the street.
  • Polishers, engravers, mounters and platers each do one operation. A single ring routinely passes through four pairs of hands within a hundred metres.
  • Retailers sit at street level and coordinate all of the above. Some own workshops; some are windows with a phone.

This is why the same specification can be quoted six ways. You are not being quoted for a product — you are being quoted for a chain of people, and the chains differ.

A price on Hatton Garden is a sentence about who will touch your ring. Ask who sets it, who polishes it, and where it is hallmarked, and the differences stop being mysterious.

Why two windows fifty metres apart differ by thousands

Four honest reasons, and one dishonest one.

The stone is not the same. “One carat, G, VS1” describes a range, not an object. Cut grade, proportions, fluorescence and the laboratory that graded it can move the price of that description by forty per cent without anybody misleading anybody.

The metal is not the same. Platinum costs more than 18ct gold and weighs more, so a heavier platinum ring costs more twice over. A cast shank and a forged one are different objects.

The labour is not the same. Hand-cut micro-pavé with grain-set diamonds is days of skilled work; a cast setting with pressed seats is hours.

The overheads are not the same. A ground-floor window on the main run costs several times what a third-floor workshop costs, and that sits in the price.

And the dishonest one: some quotes rely on you comparing a certificated stone with an uncertificated one, or a natural with a lab-grown, and not asking. Ask. Every time.

By appointment · Hatton Garden

Come with a specification, not a budget

Tell us the shape, the approximate weight, the metal and the eye-clean requirement, and we will source against it. You can then compare our quotation with anybody else’s on the street, like for like.

How to prepare for a visit

  1. Decide the shape first. It is the one thing taste decides and nothing else can. Our diamond chart has all ten outlines drawn to scale.
  2. Set a metal. It fixes the colour grade you need, as explained in our guide to the 4Cs.
  3. Fix a real budget, including the setting. Stones are quoted separately from mounts, and the mount is rarely less than several hundred pounds.
  4. Book appointments rather than walking in. Anything good is in a safe, not a window, and safes are opened for people who are expected.
  5. Allow two hours and see no more than three jewellers. After three, every stone starts to look the same and you will buy from whoever is most persuasive rather than whoever is best.

Questions worth asking out loud

  • Which laboratory graded this, and may I see the inscription?
  • Is the stone natural or laboratory-grown, and is that stated on the report?
  • Who sets it, and is the setting done here or sent out?
  • Where is it hallmarked?
  • What is included afterwards — resizing, re-polishing, claw checks?
  • May I have the quotation in writing, itemised between stone and mount?

Nobody reputable minds any of these. The reaction to the list is itself information.

Timing, and a note on deposits

A ring made to order takes three to five weeks in normal conditions, longer before Christmas and through the spring proposal season. Hallmarking at the London Assay Office adds a few days for pieces over the exemption weight. If you need a date, say the date at the first meeting rather than the last.

Deposits are normal — stones are bought in for you. Ask what is refundable and by when, and have that on the same written quotation.

What the street is genuinely good at

Choice, and speed of choice. Within two hundred metres you can look at more fine stones in an afternoon than most cities offer in a year, have a setting altered while you wait, and get an answer on a repair the same day. No website replicates that, which is why the trade is still here a hundred and fifty years on.

By appointment · Hatton Garden

Start with half an hour and no obligation

We will show you stones across your budget, explain what separates them, and put nothing in front of you that we would not buy ourselves. If you leave to think about it, that is a perfectly good outcome.

Written on Hatton Garden. Grading terminology follows GIA definitions; prices are indicative at the time of writing and move with the market. Nothing here is a valuation.

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