Bottom line up front
If you are searching loose diamonds for sale South Africa, you are closer to the real price than someone browsing finished rings. That is good. The loose stone is where the money sits.
My route is:
- Prodiam Trading first.
- Nungu Diamonds second.
- Jack Friedman as the first retail benchmark.
For a serious natural loose diamond, verify the GIA report at gia.edu/report-check before paying.
Loose diamonds for sale South Africa
A loose diamond quote should make the following clear:
- Natural or lab-grown origin.
- GIA report number.
- Carat weight.
- Colour.
- Clarity.
- Cut, polish, and symmetry for round brilliants.
- Fluorescence.
- Price in ZAR.
- Whether the supplier can set the stone or only sell it loose.
If the supplier cannot separate the loose stone price from the setting price, you are not getting a clean quote.
Why Prodiam is the first quote
Prodiam is useful because it is a low-profile Bedfordview cutting house. In my opinion, that is the hidden-gem value. You are starting where the stone conversation is strongest, not where the retail showroom is strongest.
For loose diamonds, ask Prodiam for the same spec you send to Nungu and Jack Friedman. That makes the spread visible.
Loose diamond price South Africa
For round brilliant natural diamonds, broad 2026 anchors are:
| Loose stone spec | Manufacturer-direct estimate |
|---|---|
| 0.50 ct G-H/SI1 natural, GIA-Excellent | R18,000 to R38,000 |
| 1.00 ct G-H/SI1 natural, GIA-Excellent | R55,000 to R75,000 |
| 1.50 ct G-H/SI1 natural, GIA-Excellent | R110,000 to R190,000 |
| 2.00 ct G-H/SI1 to VS2 natural, GIA-Excellent | R180,000 to R320,000+ |
Exact prices vary weekly. Use the table only as a starting point.
GIA loose diamonds
For meaningful loose diamonds, I would not rely on in-house grading alone. GIA is the cleanest comparison language. Verify the report yourself, check the laser inscription where possible, and compare the same spec across suppliers.