Harmony Jewels

102 Hatton Garden, EC1N 8LY · View on Google Maps · Visit website

Harmony Jewels trade from 102 Hatton Garden, selling lab-grown and earth-mined diamonds through two routes: bespoke commissions, and ready-to-ship rings that can be collected the same day in some cases. Aftercare includes lifetime free cleaning, and purchases carry a manufacturer’s warranty.

Google shows 866 reviews. We analysed 850: 835 are five star, seven are four star and eight are critical, across almost nine years. A hundred and fifty-three arrived in the past twelve months, and the shop replies to a quarter of them.

Depth of knowledge is the leading theme by some way, mentioned by 105 reviewers, and the shop is open seven days, strictly by appointment.

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. Harmony Jewels ranks #23 of 311.

A hundred and five reviewers mention depth of knowledge, 51 patience with questions and 44 the bespoke and design process. Thirty-three report that the partner loves the ring, 27 each mention the absence of pressure and aftercare, 19 describe being guided through as nervous first-timers, and ten describe purchases handled remotely.

Eight of the 850 are critical, spread across nine years, and the two most serious dispute what a stone was sold as. That is a small share of a large record, and the sensible step costs nothing whatever the shop: ask for the certificate and check it against the stone before you pay. Our 4Cs guide shows you how.

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

This suits a first-time buyer braced for Hatton Garden. Nineteen reviewers describe arriving nervous and being walked through it, 27 mention no pressure to buy, and more than one describes Harmony as the calm room after the street outside.

It also suits a buyer in a hurry. Ready-to-ship rings can in some cases be collected the same day, and seven reviewers mention a fast turnaround.

Book before you go, whatever day it is. They open seven days but strictly by appointment, and reviewers who dropped in without one describe being turned away.

Do I need an appointment at Harmony Jewels?

Yes. They open seven days but strictly by appointment, booked through their website. Reviewers who dropped in without one describe being turned away.

What are Harmony Jewels’ opening hours?

Monday to Sunday 10am to 5.30pm, by appointment.

Can I buy a ring the same day?

Sometimes. Alongside bespoke commissions they sell ready-to-ship rings, which in some cases can be collected the same day.

Why are they ranked #23 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 850 analysed reviews across almost nine years, 835 of them five star, with 153 from the past twelve months.