Value-led, nearly every review answered · Hatton Garden

ASR Gems

Ranked #75 of 305 verified London jewellers on review evidence: 170 analysed Google reviews, 168 of them five star, from a third-floor unit in Treasure House at 19-21 Hatton Garden.

★★★★★ 5 174 Google reviews, checked September 2026
Hatton Garden London
Appointment only How you get through the door
#75 Top 100 rank, #75 of 305 verified on review evidence
Location Hatton Garden, London
Appointments Appointment only
Opening hours Mon to Sat 10am to 5pm
Speciality Build-your-ring with GIA-certified natural and lab-grown diamonds, repairs

Unit 3, 3rd Floor, Treasure House, 19-21 Hatton Garden, EC1N 8BA

Find them on Google Maps →

Our verdict

Ranked #75 of 305 on 170 analysed reviews, 168 of them five star, nearly all answered. A value-led Treasure House unit, by appointment, with GIA stones behind the build-your-ring path.

Good value for the money ×11Bespoke and design process ×6

About

A Trade-Floor Unit With Retail Manners

ASR Gems work from a third-floor unit in Treasure House at 19-21 Hatton Garden, the same building as several other names we rank, with a build-your-ring path on GIA-certified natural and lab-grown stones, wedding bands, a repair service and a sell-your-gold counter.

Google shows 174 reviews. We analysed 170: 168 are five star and two sit at one star, across eight and a half years, with 33 from the past twelve months. They reply to 99 per cent of reviews, essentially all of them.

Good value for the money is the leading theme in the record, which fits the unit-not-shopfront format: the overheads are low and the reviews suggest it shows in the pricing.

An upstairs unit where value leads the record and virtually every review gets an answer.

London Engagement Rings
Where they stand

#75 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. ASR Gems ranks #75 of 305.

They also appear on one of our ranked lists: Lab-Grown Specialists.

What reviewers say
170Reviews analysed
168Five star
9Years of reviews

Good value for the money leads with eleven mentions, with six describing the bespoke and design process, in a record whose consistency across eight years is the substance.

Two reviews sit at one star against 168 at five, and with a 99 per cent reply rate the handling of both is public.

In plain terms: a record this clean means you should be in safe hands here.

During our search for the perfect diamond ring in Hatton Garden, we discovered ASR Gems and immediately realised they were the best. After visiting several shops, we found that ASR offered the most competitive prices without compromising on quality. Mushy was incredibly attentive throughout the process.”
Amania Sameer · January 2025 · On Google
Great service at ASR Gems! Mushy provided excellent customer service throughout the process of purchasing an engagement ring and was easily contactable on whatsapp for any questions. Overall great value for money with high quality workmanship. Highly recommended for any jewelry needs!”
stefan rossi · April 2024 · On Google

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

Who this suits

The Right Buyer for ASR Gems

This suits a buyer chasing the stone-for-money equation who is comfortable with an upstairs appointment rather than a window: the value theme is the record’s own, not our framing.

The repair and gold-buying counters make it a practical address beyond the ring itself. Book ahead; the unit does not take passing trade.

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 ASR Gems?

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.

Claim or update this profile →See an example enhanced profile →
Common questions

ASR Gems: Frequently Asked Questions

Do I need an appointment at ASR Gems?

Yes. The business is Unit 3 on the third floor of Treasure House, 19-21 Hatton Garden, and consultations are booked through the site.

What are ASR Gems’ opening hours?

Monday to Saturday 10am to 5pm.

Are their diamonds certified?

Yes. The build-your-ring path runs on GIA-certified stones, natural and lab-grown both.

Why are they ranked #75 of 305?

The ranking is built on Google review evidence across every London jeweller we could verify as a genuine engagement ring business. Their record is 170 analysed reviews, 168 of them five star, with 99 per cent answered.

Neighbours

Neighbours of Note in Hatton Garden

71 of the Top 100 are in Hatton Garden. Three more worth a place on the shortlist, each with a full profile:

The evidence behind this guide

This is the only place online that ranks London's engagement ring jewellers on review evidence. I screened 1,120 London businesses, verified 305 as genuine engagement ring jewellers, and re-crawl their Google reviews every month, 57,304 reviews at the last count. Every listing is checked for district, walk-in access, natural or lab-grown stones and opening hours before it appears. The method is published in full on the Top 100, and rankings cannot be bought: editorial policy.