Bespoke diamond specialist · Hatton Garden

Lewis Malka

A one-man bespoke operation inside the London Diamond Bourse, working exclusively with natural diamonds and holding what is, by some distance, the cleanest review record of any jeweller on this site.

★★★★★ 5 920 Google reviews, checked September 2026

Hatton Garden London

Private appointment only How you get through the door

#1 Top 100 rank, #1 of 305 verified on review evidence

Location Hatton Garden, London

Appointments Private appointment only

Opening hours Mon to Thu 9.30am to 5pm, Fri 9.30am to 1.30pm

Price range Mid to high

Speciality Bespoke design, natural diamonds, direct dealing

Diamond Bourse, 100 Hatton Garden, EC1N 8NX

Find them on Google Maps →

Our verdict

The cleanest review record on this site, built over a decade by one man working alone from inside the Diamond Bourse. Go if you want expertise and a direct relationship, and if you have already accepted that you are buying a natural stone. Do not go expecting to browse.

Depth of knowledge ×110Bespoke and design process ×78Aftercare and resizing ×50Partner loves the ring ×33Patient with questions ×30Ring exceeded expectations ×22

About

One Jeweller, No Sales Floor

Lewis Malka began his apprenticeship at sixteen, studied at the Sir John Cass School of Art, and has been in the trade for more than thirty years. He established the business in 2000 and works from inside the London Diamond Bourse at 100 Hatton Garden, where he is a member. That address matters: the Bourse is a trade building, not a parade of shops, so there is no window to look in and nothing to walk past.

What you get instead is the jeweller himself. No sales team, no consultant working to a target, and no handover from the person who advised you to the person who makes it. He estimates he has worked with more than five thousand couples, and he has written a book on choosing an engagement ring, which tells you something about how he prefers to spend a consultation.

He works with natural stones and argues the case publicly, having written that he has shunned lab-grown. His position is that lab-grown stones suit a buyer who wants maximum size for a limited budget, but that they do not hold value in the same way. You do not have to agree with him. You should know it before you book, because it will shape what he shows you.

You are not being sold to by someone who was trained last month. You are talking to the man who will make it.

London Engagement Rings

Where they stand

#1 of 305 Verified London Jewellers

Our Top 100 ranks every London business we could verify as a genuine engagement ring jeweller, 305 of them from a pool of 1,120 candidates, on the strength of their Google review evidence. Lewis Malka ranks #1 of 305.

They also place high on five of our ranked lists: No. 1 on our First-Time Buyers list, No. 1 on our Highest Rated list, No. 1 on our Natural Diamond list, No. 1 on our No-Pressure Jewellers list and No. 9 on our Most Reviewed list.

What reviewers say

899Reviews analysed

898Five star

10Years of reviews

The distribution is the story. Of the 899 reviews we analysed, 898 are five star and one is four star. Nothing sits below that, across more than ten years of trading. No other jeweller on this site comes close, and it is unusual enough to be worth pausing on rather than skimming past.

Reading the reviews themselves, 110 people specifically mention how much he knew, 78 describe commissioning something bespoke, and 50 talk about coming back afterwards for resizing or aftercare. That last group matters more than it looks: people returning for service years later is harder to manufacture than a burst of positive reviews.

Two things to weigh honestly against it. The pace has slowed, with 60 of those reviews from the past year against a ten-year total, so much of this reputation was built earlier rather than recently. And a record this clean is rare enough that it is sensible to read it alongside other evidence rather than on its own. He replies to essentially every review he receives, 897 of 899, which is the highest rate we found anywhere.

For scale: that record sits in the top 3 per cent of the 305 for review volume, and the top 1 per cent for the share of reviews at four stars or better. In plain terms, you should be in safe hands here.

I recently had the pleasure of purchasing an engagement ring from Lewis Malka, and I am absolutely thrilled with the entire experience. From start to finish, the process was seamless and enjoyable, and I couldn't have asked for a better outcome.”

Mario Manoli · August 2023 · On Google

After searching the high street for the perfect engagement ring, I had been caught up in whirlwind of unprofessional people who just wanted to sell me anything. I really wanted to be valued and have trust in my purchase for that special lady of mine. it was important to me, and part of my journey when buying that one and only ring.”

Andrew Burton · November 2019 · On Google

Review figures taken from Google and checked in September 2026. We recount them monthly.

Who this suits

The Right Buyer for Lewis Malka

This suits a buyer who wants one expert rather than a showroom, and who would rather have a long conversation than a tray of options. If dealing with the same person from first sketch to final polish appeals, and you want a natural stone sourced from the trade floor rather than picked from a catalogue, that is exactly what is here.

It will not suit you if you want to browse. There is no shopfront, no stock to try on unannounced, and no walking in on a Saturday. Nor will it suit you if you have settled on a lab-grown stone, since he does not work with them and will tell you why.

First ring? Lewis Malka is No. 1 on our First-Time Buyers list, and our beginners guide covers budget, stones and how a first visit works.

Read it before any shop →

Plan the visit

Seeing more than one jeweller? Two minutes of questions picks who to see for your budget and style.

Plan your visit →

For the jeweller

Run Lewis Malka?

This profile is free, built from the public review record and recounted monthly. Correct anything, add your own photography, or ask about our quarterly feature. Lewis Malka also qualifies for our Top 3 badge, free to display.

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Common questions

Lewis Malka: Frequently Asked Questions

Do I need an appointment to see Lewis Malka?

Yes. He works by private appointment only, from inside the London Diamond Bourse at 100 Hatton Garden. It is a trade building rather than a shop, so there is no showroom to walk into.

Does Lewis Malka sell lab-grown diamonds?

No. He works with natural stones and has publicly set out his reasoning, arguing that lab-grown stones suit buyers wanting maximum size on a tighter budget but do not hold value in the same way. If you want a lab-grown stone, you will need a different jeweller.

What are the opening hours?

His site publishes no opening hours and states appointment only, with booking through the site or by phone, and virtual consultations available worldwide. The hours on this page come from his Google listing, so agree a time directly when you book.

How good are the reviews really?

Of the 899 reviews we analysed, 898 are five star and one is four star, with nothing below that in over ten years. He replies to 897 of them. The main caveat is pace: only 60 are from the past year.