Heirloom diamonds,
made for a lifetime.
Hand-crafted on London's Hatton Garden. Conflict-free natural and lab-grown stones, certified by GIA and IGI. Designed to be worn, treasured, and one day, inherited.
A piece for every moment.
Most loved this season.
Pieces chosen by our master gemmologists, paired with their most-asked-for diamond specifications.
Natural0.95 Ct GIA Certified Natural Round Diamond Stud Earrings in 950 Platinum
0.95ct round · G/VS
NaturalGIA Certified 1.40 Ct Natural Round Diamond Stud Earrings in 950 Platinum
NaturalGIA Certified 1.44 Ct Natural Round Diamond Stud Earrings in 950 Platinum
Natural0.50Ct Natural Ruby & Diamond Hoop Earrings Round White Gold Women
0.5ct round · /
NaturalGIA CERTIFIED 11.89CT ROUND DIAMOND CLAW SET TENNIS BRACELET IN PLATINUM (950)
NaturalGIA CERTIFIED D-E / IF-VVS 11.12CT ROUND DIAMOND CLAW SET TENNIS BRACELET IN PLATINUM (950)
Naturaldeposit for bespoke Items
Naturalbracelet sample
This season's most wanted.
Our most popular pieces, at our keenest prices.
NaturalChannel Set D-E/VS Natural Baguette Diamond Half Eternity Wedding Ring 0.50CT - 3.00CT
NaturalWGI CERTIFIED 28.54 CARAT FANCY INTENSE YELLOW CUSHION DIAMOND TENNIS BRACELET IN 18K GOLD
NaturalDIAMOND TENNIS BRACELET FOR WOMEN 2.00CT - 5.00CT
Natural26.28CT ROUND DIAMOND PLATINUM TENNIS BRACELET - WGI CERTIFIED
Suspended in
brilliance.
Every Buy Fine Diamonds ring is built around a single idea: the stone is what you see. Our settings dissolve into the metal, leaving each diamond to return every photon to the eye.
- GIA & IGI certified
- Conflict-free origin
- Hatton Garden crafted
- Lifetime warranty
Lab-grown and natural.
Equally diamond.
A diamond is a diamond. Both are pure crystallised carbon. Both refract light in the same way. Both are certified by the same independent laboratories. The only real difference is whether the stone formed three billion years ago, deep in the earth, or three months ago, in a laboratory engineered to replicate that same pressure and heat.
Natural diamonds carry the romance of geological history. Lab-grown diamonds offer the same brilliance at roughly a third of the price, with a clearer ethical and environmental story. We carry both, beautifully, and we will help you choose.
Per carat for a 1ct round brilliant, IGI certified.
Per carat for a 1ct round brilliant, GIA certified.
Heirloom-grade naturals.
A curated selection of GIA-certified natural diamonds, set in pieces meant to be passed down.
Natural0.95 Ct GIA Certified Natural Round Diamond Stud Earrings in 950 Platinum
0.95ct round · G/VS
NaturalGIA Certified 1.40 Ct Natural Round Diamond Stud Earrings in 950 Platinum
NaturalGIA Certified 1.44 Ct Natural Round Diamond Stud Earrings in 950 Platinum
NaturalGIA CERTIFIED 11.89CT ROUND DIAMOND CLAW SET TENNIS BRACELET IN PLATINUM (950)
One stone.
One story.
A bespoke commission begins with a conversation. From sketch to CAD render to hand-finishing, we work with you to bring a one-of-one piece into being. Six to eight weeks. No minimum spend.
- 01ConsultationVirtual or in-atelier. Free.
- 02Design & CADSketch, 3D render, wax sample.
- 03Stone SelectionHand-picked to your spec.
- 04Hand-finishingCrafted on Hatton Garden.
Trusted on Hatton Garden, and beyond.
It was custom made to the details that I wanted. Mahsa was really helpful in the beginning, explaining everything about diamonds as I had 0 clue about any of these. When I came back they helped me redesign a few parts so it would not chip, even increasing the stone size for me. Ravi went through all the details at the end explaining everything about the stone, even showing me the diamond number. GREAT people here, very patient and understanding. Highly recommend.
Answers, before you ask.
What is the difference between lab-grown and natural diamonds?
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Lab-grown and natural diamonds are chemically, optically, and physically identical - both are pure crystallized carbon. The only difference is origin. Natural diamonds form deep in the earth over billions of years. Lab-grown diamonds form in a controlled environment over weeks using either Chemical Vapor Deposition (CVD) or High Pressure High Temperature (HPHT) methods. Lab-grown diamonds typically cost 60 to 80 percent less than equivalent naturals and come with the same IGI or GCAL certification.
Are your diamonds certified?
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Yes. Every loose diamond over 0.30 carat sold at Buy Fine Diamonds comes with an independent grading report from GIA (Gemological Institute of America), IGI (International Gemological Institute), or GCAL. The report verifies the 4Cs (cut, color, clarity, carat) along with measurements, polish, symmetry, and fluorescence. Most stones also include laser inscription of the report number on the girdle for permanent identification.
Do you offer custom or bespoke design?
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Yes. Our bespoke service walks you through every stage from sketch to CAD render to wax model to final piece. Typical turnaround is six to eight weeks. Start with a free virtual consultation with our design team or visit the Hatton Garden atelier in person. There is no minimum spend.
What is your return and warranty policy?
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We offer a 30-day free return window on every order, including international shipments. Returns include free pre-paid insured shipping, complimentary resizing, and free re-engraving. Every piece carries a lifetime manufacturing warranty plus free annual cleaning and inspection.
How are your diamonds sourced ethically?
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All natural diamonds are conflict-free and fully compliant with the Kimberley Process Certification Scheme. We additionally trace each stone through our supplier audit chain back to mine of origin where possible (Botswana, Canada, Russia, or Australia). Lab-grown diamonds carry an even lower environmental footprint and zero risk of conflict origin. Our recycled metals are SCS certified.
Do you ship internationally?
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Yes. We ship fully insured to over 95 countries via Royal Mail Special Delivery, DHL Express and Malca-Amit. UK orders arrive next day; international delivery typically takes two to four business days. All shipments require adult signature on delivery and ship in plain unbranded packaging for security.
A diamond, in person.
See our collection at our atelier on 88-90 Hatton Garden, London. Private appointments are complimentary and unhurried, with a senior gemmologist.