Diamond Sourcing, Simplified
Whether you're seeking a single exceptional stone or regular trade supply, our process is designed for clarity and confidence.
Share Your Requirements
Tell us your preferred shape, size range, quality parameters, budget, and intended design.
Receive Your Shortlist
We curate a selection of 3-5 stones that match your criteria, each with full certification and photography.
Review & Decide
Examine certificates, compare options, and speak directly with our diamond specialists. No pressure.
Tracked in Caesar Track
Your chosen stone is logged against your project with complete documentation for traceability.
Every Shape, Expertly Sourced
From classic round brilliants to distinctive fancy shapes, we source stones that perform beautifully in any design.
Round
Maximum brilliance and fire
Oval
Elongated elegance
Cushion
Romantic, soft corners
Emerald
Art deco sophistication
Pear
Unique and flattering
Marquise
Dramatic elongation
Asscher
Vintage stepped cut
Radiant
Brilliant meets emerald
Princess
Modern square brilliance
Heart
Romantic symbolism
Understanding the 4 Cs
What matters on paper versus what matters visually. Our specialists help you find the right balance for your requirements.
Cut
The Most Important Factor
Cut determines how a diamond interacts with light. It's the only C influenced by human skill. A well-cut diamond will display superior brilliance, fire, and scintillation—making even lower colour and clarity grades appear more impressive. We prioritise Excellent and Very Good cuts, as these deliver the visual impact discerning buyers expect.
GIA-Certified Diamonds & Wholesale Diamond Sourcing
Caesar Diamonds provides GIA-certified diamond sourcing for private collectors, jewellers, designers and trade partners. Based in Hatton Garden, our diamond specialists curate shortlists of natural and lab-grown diamonds to exact specifications — with full certification, competitive trade pricing and complete traceability from origin to setting.
GIA-Certified Natural Diamonds
Every natural diamond we supply is accompanied by a GIA grading report, the international standard for diamond certification. We focus on Excellent and Very Good cuts to maximise brilliance, and help clients balance colour, clarity and carat weight against budget for the best visual value.
Lab-Grown Diamonds
Lab-grown diamonds offer identical physical, optical and chemical properties to mined diamonds at a lower price point. We source certified lab-grown stones for clients seeking a more accessible or sustainability-led option, with full disclosure and grading documentation.
Fancy Shapes & Rare Stones
Beyond round brilliants, we source oval, cushion, emerald, pear, marquise, asscher, radiant, princess and heart-shaped diamonds, as well as fancy colour diamonds and matched pairs for three-stone and bespoke designs.
Trade Diamond Supply
Jewellers, designers and retailers can access our trade diamond sourcing for single stones and recurring supply. Trade accounts receive wholesale pricing, dedicated sourcing and documentation suitable for resale, with stones logged against your project or stock records.
Conflict-Free & Responsible Sourcing
All our diamonds comply with the Kimberley Process Certification Scheme. We are committed to responsible jewellery practices and provide full provenance documentation, so both private clients and trade partners can source with confidence.
Diamond Certification & Documentation
Each stone is supplied with its grading certificate, and where relevant, origin and laser-inscription details. For commissions, the chosen diamond is logged in Caesar Track against your project, creating a permanent record linking stone, certificate and finished piece.
Diamond Sourcing
Wholesale Diamond Questions
Where can I buy wholesale diamonds in the UK?
Caesar Diamonds is a wholesale diamond supplier based in Hatton Garden, London. We supply GIA-certified natural and lab-grown diamonds to jewellers, designers, retailers and dealers across the UK, with trade pricing and documentation suitable for resale.
Are your diamonds GIA certified?
Yes. Natural diamonds are supplied with a GIA grading report, the international standard for diamond certification, and every stone is documented against your project or order record.
Do you supply diamonds to jewellers and trade clients?
Yes. Trade clients can order single stones, matched pairs and calibrated parcels, either for a specific commission or as recurring supply. Trade accounts receive wholesale pricing and a dedicated sourcing contact.
Can you source a specific diamond shape or size?
Yes. We source round, oval, cushion, emerald, pear, marquise, asscher, radiant, princess and heart-shaped diamonds, including fancy colour stones and matched pairs, to the shape, size, colour and clarity parameters you specify.