Diamonds for Sale in South Africa
Certified loose diamonds and fine diamond jewellery, sold direct from the trade — no showroom, no middlemen, no retail markup. Buy from anywhere in South Africa, or view in person by appointment in Johannesburg or Cape Town.
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Certified Diamonds for Sale, Direct from a Dealer
Diagem is a South African diamond dealer, not a jewellery shop. That means the diamonds for sale here are priced at trade level — the same certified stones you would find behind a retail counter, without the showroom overheads and markups stacked on top.
Every diamond is independently certified by the GIA or IGI, so you know exactly what you are buying before any money changes hands. Whether you want a single loose stone, a diamond for a bespoke engagement ring, or a finished piece, David sources it directly and presents certified options for you to compare. Buy from anywhere in South Africa with insured nationwide delivery, or view in person by appointment in Johannesburg or Cape Town.
Explore Diamonds by Type
Loose Natural Diamonds
Certified natural diamonds sold loose by the carat — choose your exact shape, colour and clarity at factory-direct prices. The most popular way to buy at Diagem.
Lab-Grown Diamonds
IGI-certified lab-grown diamonds for sale at a fraction of natural-stone prices — chemically identical, a larger stone for the same budget.
GIA Certified Diamonds
Stones graded by the world's most trusted laboratory — maximum resale confidence for high-value and investment purchases.
Shop by Diamond Shape
Round, oval, emerald, cushion and more — see how each shape looks and wears before you choose the stone you want to buy.
Engagement Rings
Buy a certified diamond set in the ring of your choice, or start from a style and build around it — solitaire, halo, three-stone and more.
Bespoke Jewellery
Have a certified diamond made into a completely custom piece, designed and manufactured to order by David.
Why Buy Your Diamond Direct from Diagem
The same certified stone, without the retail chain marking it up on the way to you.
Factory-Direct Pricing
You buy at trade level — no showroom, no sales floor, no middlemen. Send David any like-for-like quote with the certificate details and he will beat it where possible.
Independently Certified
Every diamond comes with its original GIA or IGI certificate. Carat, cut, colour and clarity are verified by an international lab — never just our word for it.
View or Ship, Nationwide
View in person by appointment in Johannesburg or Cape Town, or buy from anywhere in South Africa with fully insured, secured delivery to your door.
Simple, Personal, No Pressure
Tell David What You Want
Message on WhatsApp or send a short enquiry with your shape, carat and budget. Not sure yet? David will talk you through the options.
Compare Certified Options
You receive matching certified stones with full grading details and honest, factory-direct pricing to compare side by side.
View, Then Buy
See your shortlisted stones in person by appointment in Johannesburg or Cape Town, or proceed remotely with insured nationwide delivery.
What Do Diamonds Cost in South Africa?
Diamond prices move with the rand, the 4Cs and whether a stone is natural or lab-grown, so there is no single sticker price. What stays constant is that buying factory-direct removes a layer of markup from whatever you pay.
For a real sense of current pricing — including what a 1-carat diamond costs in South Africa right now — see our diamond price guide and the loose-stone options on our natural diamonds page. When you are ready for a firm number on a specific stone, David will quote you directly, at no obligation.
Diamonds for Sale — FAQ
Where can I buy diamonds in South Africa?
Are Diagem's diamonds certified?
Can I buy loose diamonds rather than a finished ring?
How do your prices compare to a retail jeweller?
Do you ship diamonds across South Africa?
How do I get a price on a diamond for sale?
Call David. He'll sort it out.
Whether it's your first diamond or your tenth, David handles every enquiry personally — honest, factory-direct advice from someone who has spent 25 years in the trade. No pressure, no obligation.