The Diamond Ring Company

Suite 124, 100 Hatton Garden, EC1N 8NX · View on Google Maps · Visit website

The Diamond Ring Company works from Suite 124 inside 100 Hatton Garden, and their Google record is the reason they sit at #2 of the 311 London jewellers we verified. Google shows 1,212 reviews. We analysed 1,200 of them, and every single one is five star. No four-star reviews, no three, no critical reviews at all, across a record stretching back more than nine years.

The review topics tell you what kind of shop this is. Diamond selection is mentioned 492 times, second only to the engagement rings themselves, which points to a stone-led operation where the conversation starts with the diamond rather than a catalogue of settings. They sell both natural and lab-grown, with dedicated lab-grown collections on their site and GIA certification on natural stones and IGI on lab-grown.

They reply to 38 per cent of reviews, and the record is current as well as long: 197 of the reviews arrived in the past year alone.

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. The Diamond Ring Company ranks #2 of 311.

They also lead or place high on five of our ranked lists: No. 1 on our Open Late list, No. 1 on our Lab-Grown Specialists list, No. 2 on our First-Time Buyers list, No. 2 on our No-Pressure list, and No. 5 on our Most Reviewed list.

The themes are broad and heavily populated. 152 reviewers mention depth of knowledge, 106 describe the bespoke and design process, and 102 report that the partner loves the ring. Seventy-nine mention patient question-handling, 74 say there was no pressure to buy, and 70 mention aftercare and resizing.

Two themes matter especially for a first purchase: 54 reviewers describe being guided through as complete beginners, and 51 mention good value for the money. The record was built steadily over more than nine years rather than in a recent rush, which reads as an established book of business.

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

This suits a buyer who wants the diamond itself taken seriously. With diamond selection the second most mentioned topic in their reviews, this is a shop where you can expect to compare stones properly rather than pick from a tray.

It also suits first-time buyers: 54 reviewers describe arriving with no knowledge and being walked through it, and 74 mention the absence of sales pressure. Both natural and lab-grown are on the table, so you can weigh the two without being steered.

Being a suite inside 100 Hatton Garden rather than a street-level window, it rewards buyers who plan a visit over those who want to browse a shopfront. Appointments are advised.

Do I need an appointment at The Diamond Ring Company?

Appointments are advised. They work from Suite 124 inside 100 Hatton Garden rather than a street-level shopfront, so there is no window to browse and a booked slot gets you proper time.

What are The Diamond Ring Company's opening hours?

Monday to Friday 8.30am to 6.30pm and Saturday 10am to 4pm. Those weekday hours put them at No. 1 on our Open Late list.

Do they sell lab-grown diamonds?

Yes, both. They run dedicated lab-grown collections alongside natural stones, with GIA certification on natural diamonds and IGI on lab-grown.

Why are they ranked #2 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 1,200 analysed reviews, every one of them five star, over more than nine years.