Deciding where to buy an engagement ring in London can feel overwhelming. The city is home to hundreds of jewellers, from high street chains to independent studios tucked away in historic arcades. Not all of them offer the same level of craftsmanship, and not all will take the time to understand what you’re actually looking for. That difference matters when you’re choosing something this personal and permanent.

As a family-run jeweller based in Hatton Garden, we at A Star Diamonds have spent years helping couples design bespoke engagement rings with ethically sourced diamonds. We know the London jewellery scene inside out, the strengths of different areas, the specialists worth visiting, and what separates a great buying experience from an average one.

Below, we’ve put together five of the best places to buy an engagement ring in London right now, covering a range of styles, budgets, and diamond options to help you find the right fit.

1. A Star Diamonds, Hatton Garden

A Star Diamonds is a family-run jeweller at the heart of Hatton Garden, London’s historic jewellery quarter. If you want to buy an engagement ring in London with a fully bespoke service from start to finish, this is a strong place to begin.

What you can buy here

At A Star Diamonds, you can commission a completely bespoke engagement ring or choose from a curated range of ready-made styles, including solitaires, diamond bands, and hidden halo designs. Both natural and lab-grown diamonds are available, giving you full control over the ethical and budgetary side of your purchase. Every piece is handcrafted in-house in the UK.

Why people choose this jeweller

The team includes goldsmiths, designers, and gemologists who guide you through every decision, from the cut and grade of your diamond to the metal type and setting. You also get lifetime benefits as standard: free resizing, polishing, cleaning, and complimentary engraving. That level of long-term support is rare at this price point.

Lifetime aftercare combined with in-house craftsmanship makes A Star Diamonds a practical choice, not just an aspirational one.

Who it suits best

A Star Diamonds works well for couples who want something genuinely unique and are willing to invest time in the design process. It is also a strong fit if you are buying fine jewellery for the first time and need honest guidance on the 4Cs, settings, and diamond sourcing without feeling rushed into a decision.

Pricing and timelines to expect

Bespoke rings typically take three to four weeks to complete once the design is finalised. Pricing varies depending on diamond size, grade, and metal choice, but the team is transparent about costs from your first appointment. Lab-grown diamond rings tend to offer meaningful savings compared to natural equivalents at the same carat weight.

Questions to ask at your appointment

• What is the difference between natural and lab-grown diamonds at this budget?
• Can I see the diamond grading certificate before committing?
• How long will the bespoke process take from design sign-off to collection?
• What does the lifetime resizing policy cover exactly?

2. Queensmith, Hatton Garden

Queensmith sits in the heart of Hatton Garden and has built a strong reputation for combining modern design with deep gemological knowledge. If you want to buy an engagement ring in London with a detail-led approach and a wide selection of certified diamonds, Queensmith is a worthwhile stop.

What you can buy here

Queensmith offers bespoke engagement rings alongside a broad ready-to-wear collection. You can select from natural and lab-grown diamonds, with a strong emphasis on GIA-certified stones. Their in-showroom design tools let you visualise ring styles before committing to a commission.

Why people choose this jeweller

The team includes qualified gemmologists who take an educational, thorough approach during consultations. Their showroom is well-organised and spacious, making it straightforward to compare stones and settings side by side.

The combination of in-house expertise and a large certified diamond inventory gives you genuine confidence in what you are buying.

Who it suits best

Queensmith works well for buyers who want clear, evidence-based guidance and prefer to weigh up several options before deciding. It is a particularly strong fit if certified stone quality sits at the top of your priority list.

Pricing and timelines to expect

Bespoke commissions typically take three to five weeks to complete. Pricing reflects the quality of the stones selected, and lab-grown diamond options are available at a noticeably lower price point than comparable natural alternatives.

Questions to ask at your appointment

Before you visit, prepare a few direct questions so you get the most from your consultation time.

• Can I compare GIA and IGI certificates side by side for the same stone grade?
• What is the realistic lead time for a bespoke design from sign-off to collection?
• Are there any differences in the aftercare policy between natural and lab-grown purchases?

3. Lily Arkwright, London showroom

Lily Arkwright has grown into one of the UK’s most recognised names for ethical gemstone jewellery, and their London showroom gives you direct access to that expertise. If you want to buy an engagement ring in London with a strong focus on sustainable options, this is a practical and well-regarded place to visit.

What you can buy here

Their speciality lies in lab-grown diamonds and moissanite engagement rings, alongside a curated selection of ethically sourced gemstones. The range covers a wide variety of settings and styles, from classic solitaires to more contemporary designs suited to different tastes and budgets.

Why people choose this jeweller

The main draw is their transparent approach to ethical sourcing and their competitive pricing on lab-grown stones. Consultations are relaxed and informative, giving you the space to ask questions without any sales pressure.

Their clear focus on sustainability makes Lily Arkwright a standout option for buyers who want a beautiful ring without compromising on ethics.

Who it suits best

This jeweller suits buyers who prioritise lab-grown diamonds or moissanite and want a strong selection to compare across different price points before committing.

Pricing and timelines to expect

Lab-grown diamond rings are competitively priced, and moissanite options reduce costs further without sacrificing visual quality. Bespoke timelines typically run three to four weeks from design confirmation.

Questions to ask at your appointment

• How does moissanite compare to lab-grown diamond in durability and everyday appearance?
• What aftercare or guarantees come with the ring?
• Can you view multiple stone options side by side before deciding?

4. Rachel Boston, East London studio

Rachel Boston is an independent studio based in East London, known for its artistic, handcrafted approach to fine jewellery. If you want to buy an engagement ring in London that feels more personal and unconventional than what you would find in a traditional showroom, this studio is worth considering.

What you can buy here

Rachel Boston offers bespoke engagement rings with a distinct artistic sensibility. The studio works with ethically sourced gemstones alongside diamonds, so if you are drawn to coloured stones or unusual cuts, you will find a wider range of options here than at most London jewellers.

Why people choose this jeweller

The studio attracts buyers who want a ring that reflects a genuinely personal aesthetic rather than a catalogue style. The design process is collaborative, and the jewellers take time to understand your taste before suggesting any directions.

If you want a ring that stands apart from conventional styles, Rachel Boston’s studio approach gives you that creative freedom.

Who it suits best

This studio works best for buyers who are open to non-traditional designs and want a maker with a clear artistic point of view involved throughout the process.

Pricing and timelines to expect

Bespoke pieces typically take four to six weeks to complete. Pricing reflects the handmade, artisan nature of the work, so expect mid-to-upper range costs depending on your chosen materials.

Questions to ask at your appointment

• Can you work with a specific gemstone I already have in mind?
• What does the design consultation process involve from first meeting to final piece?

5. Hancocks London, Mayfair

Hancocks is one of London’s most established antique and vintage jewellers, with a showroom in the heart of Mayfair. If you want to buy an engagement ring in London that carries genuine history and provenance, Hancocks offers something very different from a bespoke commission or a ready-made modern design.

What you can buy here

Hancocks specialises in antique, estate, and vintage engagement rings, spanning Georgian, Victorian, Edwardian, and Art Deco periods. Their stock rotates regularly, so each visit gives you access to a genuinely one-of-a-kind selection that no other buyer will own in the same form.

Why people choose this jeweller

The main appeal is rarity and character. Each ring carries its own history, and the team can walk you through detailed provenance on individual pieces. For buyers who value distinctiveness above all else, this is a compelling reason to visit.

A ring with genuine provenance carries a story that no newly commissioned piece can replicate.

Who it suits best

Hancocks suits buyers who are drawn to period jewellery styles and want a ring that feels visually distinct from anything available in a contemporary showroom.

Pricing and timelines to expect

Pricing reflects the rarity and condition of each piece. Because the stock is pre-owned, there is no production lead time, so you can leave with your ring on the same day.

Questions to ask at your appointment

Start with these before committing to any piece.

• What period and specific provenance does this ring carry?
• Has the ring been restored or structurally altered from its original condition?

Your next step

Each jeweller on this list offers something distinct, so the right choice depends on what matters most to you. If you value a rare antique piece with genuine provenance, Hancocks or Rachel Boston may suit you better. If ethical sourcing and lab-grown options are your priority, Lily Arkwright is a strong starting point. And if you want a fully bespoke ring crafted in-house with lifetime aftercare included, A Star Diamonds is worth your first appointment.

When you decide to buy an engagement ring in London, the most important step is booking a consultation with a jeweller who will actually listen. At A Star Diamonds, every appointment is a conversation, not a sales pitch. You get honest, expert guidance on diamonds, transparent pricing from the outset, and a team that stays with you from the first sketch through to the finished ring. Book your consultation with A Star Diamonds and start creating something genuinely personal.