Decoris Diamonds & Jewellers

8th Floor, 1 Canada Square, Canary Wharf, E14 5AA · View on Google Maps · Visit website

Decoris Diamonds & Jewellers work from the 8th floor of One Canada Square in Canary Wharf, a long way from the Hatton Garden crush. They rank #13 of the 311 London jewellers we verified, and No. 2 on our list of the best engagement ring jewellers outside Hatton Garden.

The record is nine years deep and almost spotless: 522 Google reviews, 520 of them five star, with the two critical reviews dating from 2021 and 2022. They have replied to every single review, a 100 per cent reply rate.

They sell both natural and lab-grown, with GIA and IGI certified stones through a choose-your-diamond process, and the office is open seven days a week, 9am to 7pm.

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. Decoris Diamonds rank #13 of 311.

They also hold No. 2 on our Beyond Hatton Garden list, No. 6 on our Open Late list, No. 6 on our Open Sunday list, No. 9 on our First-Time Buyers list, No. 10 on our No-Pressure list, No. 11 on our Lab-Grown Specialists list, and No. 22 on our Most Reviewed list.

Depth of knowledge leads with 63 mentions, followed by 52 for patient question-handling and 44 for the bespoke and design process. Twenty-nine reviewers say the finished ring exceeded expectations, 25 mention aftercare and resizing, and 17 describe being guided through as first-timers.

The two critical reviews are years old, from 2021 and 2022, one about a delay and one about a soured negotiation, and both carry owner replies. The record since is unbroken. One further note from our integrity checks: only seven per cent of their reviewers are single-review accounts, one of the cleaner distributions we measured.

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

This suits a buyer based in or near Canary Wharf who would rather book a considered appointment above the office than spend a Saturday walking Hatton Garden. The 9am to 7pm, seven-day hours are built for working diaries.

It also suits first-time buyers who want to be taught: knowledge and patience are the two dominant themes, and 17 reviewers describe arriving knowing nothing. Both natural and lab-grown are on the table with GIA and IGI certification.

Where is Decoris Diamonds?

On the 8th floor of One Canada Square in Canary Wharf, E14 5AA. They rank #13 of 311 on our verified list and No. 2 on our Beyond Hatton Garden list.

Do I need an appointment?

Appointments are advised. The office is open seven days a week, 9am to 7pm.

Do they sell lab-grown diamonds?

Yes, both. Their choose-your-diamond process covers GIA and IGI certified natural and lab-grown stones.

Why are they ranked #13 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 520 of 522 reviews at five stars over nine years, with a reply to every one.