About Primo Diamonds

Hatton Garden jewellers with 50 years’ experience

We help you choose a certified natural or lab-grown diamond one-to-one, then handcraft your engagement ring to order in London’s jewellery quarter.

Book an AppointmentOur story
Francesco Nicolaou, founder of Primo Diamonds
Francesco NicolaouFounder, Primo Diamonds

Our story

Fifty years of Hatton Garden expertise, offered personally

Primo Diamonds brings 50 years’ experience in Hatton Garden, London’s historic jewellery quarter, to every ring we make. Our founder, Francesco Nicolaou, grew up in the jewellery trade and built Primo around one idea: choosing an engagement ring should feel calm, clear and personal, never rushed.

Every Primo ring begins with a conversation. We listen to what you have in mind, explain your options in plain English, and help you compare certified natural and lab-grown diamonds side by side. Then we craft your ring to order, so it is made for you rather than taken from a shelf.

Whether you are just starting your search or already have a design in mind, we stay with you from your first appointment to the day you collect your ring.

My goal is simple: to give you honest advice, exceptional value and complete confidence in your decision.

  • 50 years’ experience in Hatton Garden
  • One-to-one guidance from first idea to finished ring
  • Honest advice on natural and lab-grown diamonds
  • Help choosing a ring, or designing your own

Primo in numbers

The difference experience makes

  • 50Years in Hatton GardenExperience in London’s jewellery quarter
  • 5.0Google ratingFrom the couples we have helped
  • 2–4Weeks to craft your ringMade to order, by hand
  • 1:1Private consultationsIn our showroom or by video

Why Primo

Why couples choose Primo Diamonds

Hatton Garden craftsmanship, certified diamonds and honest gemmological advice, so every decision feels clear and never rushed.

  • Expert guidance

    Qualified gemmologists explain cut, colour and clarity in plain language — so you choose with confidence, not confusion.

  • Made in Hatton Garden

    Every ring is crafted to order in London's jewellery quarter, where designers, goldsmiths and setters work side by side.

  • Certified & transparent

    Natural diamonds graded by GIA and lab-grown diamonds by IGI, with honest advice on where your budget goes furthest.

  • Natural or lab-grown

    We explain the real differences in look, value and price, then help you choose the diamond that suits you.

  • Bespoke, from sketch to CAD

    Design your own ring with us and review detailed CAD renders before anything is made.

  • Personal, never pushy

    A calm one-to-one appointment in our showroom or by video, at a pace that suits you.

A Hatton Garden jeweller setting a diamond into a gold engagement ring at the bench
Hand-drawn sketch of an emerald-cut engagement ring beside the finished ring
Hallmarked in LondonBy the London Assay Office

Craftsmanship

Handcrafted to order in Hatton Garden

Your ring is cast, set and polished by hand by skilled Hatton Garden craftspeople, then hallmarked by the London Assay Office before it reaches you. Made-to-order rings are ready in 2–4 weeks, and our Quickship designs can be with you within 5 working days.

  1. 01 DesignChoose a setting or design your own, with CAD renders to approve first.
  2. 02 CastYour ring is cast in platinum or 18ct gold.
  3. 03 SetYour diamond is set by hand, claw by claw.
  4. 04 Polish & hallmarkPolished to a mirror finish and hallmarked in London.
Explore bespoke ringsDesign your ring
  1. Consultation

    Step 01

    Consultation

    Share your ideas and budget in our Hatton Garden showroom or by video.

  2. Choose your diamond

    Step 02

    Choose your diamond

    Compare certified lab-grown and natural diamonds side by side.

  3. Hand-drawn sketch of a bespoke engagement ring design

    Step 03

    Review your CAD

    See detailed renders from every angle and request changes before anything is made.

  4. A finished Primo Diamonds engagement ring being worn

    Step 04

    Ready to treasure

    Cast, set and polished by hand, hallmarked by the London Assay Office, then ready to collect or deliver.

Our promises

Peace of mind, for life

Certified loose diamonds being inspected in Hatton Garden

Certified & responsibly sourced

Diamonds you can trust

Every centre diamond we supply comes with an independent grading report: GIA for natural diamonds and IGI for lab-grown. The report confirms the cut, colour, clarity and carat weight, so you know exactly what you are buying.

We work only with trusted suppliers. Our natural diamonds are sourced in line with the Kimberley Process and the System of Warranties, and our lab-grown diamonds come from suppliers who can trace their origin.

  • Natural diamonds graded by GIA
  • Lab-grown diamonds graded by IGI
  • Natural diamonds sourced under the Kimberley Process
Search diamonds Certification explained

Reviews

What our clients say

  • Oli3 months ago
    Verified

    Great experience at Primo! The team were incredibly helpful and patient while we chose our engagement ring. The quality of the diamond and setting exceeded our expectations — we could not be happier.

  • Jack Wyatt2 weeks ago
    Verified

    Visited the Hatton Garden showroom and received expert advice without any pressure. Francesco walked us through every option and the finished ring is absolutely stunning.

  • Simon6 days ago
    Verified

    From the first consultation to collection, everything was seamless. Transparent pricing, beautiful craftsmanship, and a team that genuinely cares about getting it right.

  • Scott3 weeks ago
    Verified

    We designed a bespoke ring and the process was clear at every stage. The diamond sparkles beautifully and the setting sits perfectly on the finger. Highly recommend Primo Diamonds.

  • Emma R.1 month ago
    Verified

    Calm, professional and genuinely helpful — exactly what we wanted when choosing such an important ring. The virtual appointment option made it easy to fit around work.

  • Daniel K.2 months ago
    Verified

    Outstanding service and a ring we are proud of. The gemmologist explained everything clearly and helped us balance budget with the look we wanted. Five stars.

Visit our Hatton Garden showroom

Our showroom

Visit our Hatton Garden showroom

Experience our rings in person with a calm, one-to-one consultation in the heart of London's jewellery quarter.

  • Address The Record Hall
    16-16A Baldwin's Gardens
    London EC1N 7RJ
  • Opening hours Mon–Fri: 10am – 6pm
    Sat: 10am – 5pm
  • Telephone 020 7050 1165

Book appointment

FAQs

About Primo Diamonds: your questions answered

Where is Primo Diamonds based?

Our showroom is at The Record Hall, 16–16A Baldwin’s Gardens, London EC1N 7RJ, in the heart of Hatton Garden. It is a short walk from Chancery Lane and Farringdon stations. Appointments are recommended, and you can also meet us by video.

How long has Primo been in Hatton Garden?

Primo Diamonds brings 50 years’ experience in Hatton Garden, London’s jewellery quarter, to every ring we make.

Where are your rings made?

Every ring is crafted to order by skilled craftspeople in Hatton Garden and hallmarked by the London Assay Office. Made-to-order rings take 2–4 weeks, and Quickship designs can be with you within 5 working days.

Are your diamonds certified?

Yes. Every centre diamond comes with an independent grading report: GIA for natural diamonds and IGI for lab-grown diamonds.

Do you offer natural and lab-grown diamonds?

Yes. We offer both, and we will explain the real differences in look, value and price so you can choose with confidence. Read our natural vs lab-grown guide.

Do I need an appointment?

We recommend booking, so we can prepare a selection around your style and budget. Consultations are free and with no obligation, in our showroom or by video. Book an Appointment.

What guarantees come with a Primo ring?

Every ring comes with our lifetime manufacturer’s warranty, lifetime aftercare and cleaning, one free resize within the first 12 months, 30-day returns and free insured UK delivery.

Primo Diamonds, Hatton Garden

Engagement ring jewellers in Hatton Garden, London

Primo Diamonds is an engagement ring and diamond specialist in Hatton Garden, London’s historic jewellery quarter. We help couples choose the right diamond and setting, then craft each ring to order.

Engagement rings, made for you

Browse our engagement rings by style, from classic solitaires to halo and trilogy designs, or build your own ring by pairing a setting with a certified diamond. Every ring is made in platinum or 18ct gold.

Certified natural and lab-grown diamonds

Search thousands of GIA and IGI certified diamonds in every popular shape. Our gemmologists explain cut, colour, clarity and carat in plain English, so you can see where your budget makes the biggest difference. Our guide to the 4Cs is a good place to start.

Bespoke design and wedding rings

If you have something unique in mind, our bespoke service takes you from a first sketch to detailed CAD renders before anything is made. We also craft wedding rings designed to sit perfectly beside your engagement ring.

Visit us in Hatton Garden

Our showroom is a few minutes from Chancery Lane and Farringdon stations. Book a private consultation to see diamonds and settings side by side, with no pressure to decide on the day.

Engagement rings at the Primo Diamonds showroom in Hatton Garden

Book an Appointment

Meet us in Hatton Garden

Book a free, no-obligation appointment at our showroom or by video. We'll talk through your ideas, show you diamonds side by side and answer every question.

Book an Appointment Contact us