Lab-grown specialists · Hatton Garden

Alliance Jewels

A lab-grown diamond specialist at 33 Hatton Garden, ranked #40 of 311 verified London jewellers on 140 analysed Google reviews, all of them five star.

★★★★★ 5 152 Google reviews, checked September 2026

Hatton Garden London

Appointment only How you get through the door

#40 Top 100 rank, #40 of 311 verified on review evidence

Location Hatton Garden, London

Appointments Appointment only

Opening hours Mon to Fri 10am to 6pm

Speciality Certified lab-grown diamond engagement and wedding rings

Suite 22, 2nd Floor, 33 Hatton Garden, EC1N 8DL · View on Google Maps · Visit website

Our verdict

Ranked #40 of 311 on 140 analysed reviews, every one five star. A lab-grown specialist in a second-floor suite, strongest for buyers who have already made the natural-or-lab decision.

Kept informed throughout ×13Depth of knowledge ×11Partner loves the ring ×10Ring exceeded expectations ×9Patient with questions ×7Aftercare and resizing ×7

About

Lab-Grown as the Whole Offer, Not a Sideline

Most of the quarter sells lab-grown alongside natural. Alliance Jewels sell lab-grown as the offer itself, born, in their words, from a decade in the diamond industry, with every diamond supplied with a grading report. The shop is Suite 22 on the second floor of 33 Hatton Garden, seen by booked appointment, with virtual appointments for anyone who cannot get to the quarter.

Google shows 152 reviews. We analysed 140, and every one of them is five star, in a record under four years old, with 32 from the past twelve months.

The catalogue runs from solitaires and hidden halos to trilogy and vintage settings in platinum and gold, with a create-your-own path, bespoke work including heirloom stones, and free insured delivery on every order.

A lab-grown specialist with a grading report on every stone and 140 of 140 analysed reviews at five star.

London Engagement Rings

Where they stand

#40 of 311 Verified London Jewellers

Our Top 100 ranks every London business we could verify as a genuine engagement ring jeweller, 311 of them from a pool of 1,120 candidates, on the strength of their Google review evidence. Alliance Jewels ranks #40 of 311.

They also appear on three of our ranked lists: Highest Rated, Open Late and Lab-Grown Specialists.

What reviewers say

140Reviews analysed

140Five star

4Years of reviews

Being kept informed throughout leads the themes with 13 mentions, which fits an appointment-and-order model, with eleven citing depth of knowledge, ten saying the partner loves the ring and nine that the ring exceeded expectations.

Nothing sits below five stars. They reply to few reviews, so read the record as customers describing the work.

For scale: that record sits in 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.

After visiting several jewellers in the area, my fiancé and I chose Alliance Jewels , and meeting Suhail confirmed we’d made the right decision. He was warm, knowledgeable, and refreshingly honest. There was no pressure at any point, just genuine guidance to help us make the right choices for us.”

Tina · March 2026 · On Google

I got engaged last August, and for a whole year I’ve been searching for a jeweller who could make my dream ring. I followed so many companies on Instagram and visited so many jewellery shops, but I just didn’t feel any of them were right for me - until I found Suhail at Alliance Jewels!”

Emmy-Lou Tait · August 2023 · On Google

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

Who this suits

The Right Buyer for Alliance Jewels

This suits a buyer who has already decided on lab-grown and wants a specialist rather than a generalist with a lab-grown drawer. The budget goes materially further on the stone, and the grading report puts a number on what arrived.

It also suits remote buyers, through virtual appointments and insured delivery. Less suited to anyone set on a natural stone; that is simply not what this shop is for.

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 Alliance Jewels?

This profile is free, built from the public review record and recounted monthly. Correct anything, add your own photography and booking link, or ask about our quarterly feature.

Claim or update this profile →

Common questions

Alliance Jewels: Frequently Asked Questions

Do I need an appointment at Alliance Jewels?

Yes. The shop is Suite 22 on the second floor of 33 Hatton Garden and visits are booked, with virtual appointments offered for anyone outside London.

What are Alliance Jewels’ opening hours?

Monday to Friday 10am to 6pm.

Do they sell natural diamonds?

The offer is built around certified lab-grown diamonds; that is the specialism rather than a sideline. For a natural stone, other jewellers in the quarter are the better fit.

Why are they ranked #40 of 311?

The ranking is built on Google review evidence across every London jeweller we could verify as a genuine engagement ring business. Their record is 140 analysed reviews, every one of them five star, with 32 from the past twelve months.