Polished Diamonds in Sandton
A polished diamond's price comes down to four things: carat, cut, clarity and colour. Get the grading wrong, or trust a seller's own estimate, and you either overpay or leave money on the table.
Trading on an actual 4Cs assessment
Polished diamonds are the most liquid part of the diamond trade, which also makes them the most commonly misrepresented. A stone described as a certain clarity or colour grade isn't always what it claims to be once it's independently assessed.
We source and evaluate polished diamonds against the 4Cs directly, and can advise on GIA or IGI certification where it matters for resale or insurance.
Why buyers and sellers work with us here
Carat, cut, clarity and colour assessed independently
Access to certified and uncertified polished stones
Advice on GIA/IGI certification for resale or insurance
Secure settlement inside our Sandton offices
How we support this category
Polished Diamond Sourcing
Graded polished parcels sourced from vetted dealers and cutters.
ViewPolished Diamond Evaluation
A full 4Cs assessment before you negotiate.
ViewSecure Escrow & Transaction Handling
Payment and stone verified together before either is released.
ViewQuestions about polished diamonds
Do you only trade certified polished diamonds?
No. We source and evaluate both certified and uncertified polished stones, and can advise on certification if it will help a sale.
What does a polished diamond evaluation actually check?
Carat weight, cut quality, clarity and colour, assessed together to give you an honest value, not a seller's estimate.
Can you help me get a stone GIA or IGI certified?
We can advise on the certification process and connect you with the right next step, though certification itself is issued by the grading laboratory, not by us.
Get a free evaluation for your parcel
No cost, no obligation, before you negotiate with anyone.
Call +27 83 620 9606