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What a 1 carat diamond costs in South Africa

In our 8 September 2026 sourced-price sample, a 1 carat diamond at D colour had a guide price of R87 100 and a J around R41 700. The broader selection at H colour or better, VS2 or better and an Excellent cut filter had a guide price of R75 600. Figures include VAT and delivery for the loose diamond; a ring or other setting is additional.

The same spec varies enormously, and you should expect that. At D colour, the middle 80% of the sampled prices ran from R73 400 to R121 100. These are percentile boundaries, not the cheapest and most expensive available stones. A guide helps set a budget; the individual diamond needs its own quote.

What separates them is the part a grading report summarises rather than settles: how well the stone is actually cut and how much light it returns, where the inclusions sit and whether the eye can find them, how strongly it fluoresces, how the outline is proportioned, and how keenly that particular stone happens to be priced against the international trade benchmark on the day. Weight and colour are two inputs out of a dozen.

1 carat diamond price by colour

A fair colour comparison has to hold everything else still, so this is VS1 to VS2 clarity, an Excellent cut filter and no fluorescence. The weight band is 0.95–1.09 ct. Typical is the median of the captured sample: half the sampled prices are lower, half are higher. A limited sample is labelled separately. Moving from D to J changes the typical price by about R45 400.

ColourTypicalMiddle half falls betweenAt capture
DR87 100R74 200 to R101 400583Check this spec →
ER79 300R70 300 to R89 200710Check this spec →
FR72 400R66 400 to R84 300863Check this spec →
GR68 800R62 500 to R76 3001 247Check this spec →
HR61 300R54 700 to R65 8001 409Check this spec →
IR48 200R47 800 to R54 1001 128Check this spec →
JR41 700R41 300 to R45 600771Check this spec →

1 carat diamond price by clarity

Held at H colour within 0.95–1.09 ct. Cut and fluorescence can still vary in this selection. Ask to see the individual stone: an SI1 grade alone does not establish whether inclusions are visible.

ClarityTypicalMiddle half falls betweenAt capture
VVS1R67 700R67 000 to R77 900602Check this spec →
VVS2R63 800R63 200 to R69 000741Check this spec →
VS1R60 300R59 300 to R66 9001 018Check this spec →
VS2R54 700R54 100 to R63 1001 005Check this spec →
SI1R46 500R44 700 to R51 700794Check this spec →

Dated price guidance from sourced listings. These figures were captured on 8 September 2026. They describe sampled prices, not stock held in Bedfordview or a guarantee that a particular stone remains available.

Use the typical price and middle-half range together when setting a budget. Where too few prices were returned, the table labels a limited sample and omits the range. Confirm the current price and availability before deciding.

No two of these diamonds are the same

A table like this describes a market, not a stone. Treat every figure as the shape of what is available at that spec, not a price list and not a promise. A grading report identifies the stone and its grades; the price appears in your written quote for the diamond you choose.

We benchmark every stone against the trade list before we put it in front of anyone, and we would rather lose a sale than sell you one we would not buy ourselves. Come and talk to us and we will often do better than the table, because a real stone is priced on its own merits.

Price sample captured 8 September 2026. Typical is a sample median; the middle-half band is the sampled 25th to 75th percentile. Limited samples use the lower-priced listings returned and should not be read as a market median. Guide figures are rounded up to the next R100.

Check current 1 carat diamonds →

A one carat round brilliant natural diamond, close up
  • Natural diamonds only

    We sell natural diamonds and diamond-set jewellery. Ask us about the grading report and available origin documentation for your chosen stone. Why we don’t sell lab-grown →

  • Independent grading reports

    The grading laboratory is shown per stone. Review its report and the individual diamond before choosing; sourced examples can include GIA, EGL and IGI.

  • Insured delivery, SA & worldwide

    Overnight across South Africa via Brink’s, G4S or our nominated jewellery courier. Insured worldwide dispatch via Ferrari Group and FedEx Custom Critical.

  • 14-day in-person exchange

    In-person sales at the viewing room come with a 14-day exchange courtesy on stock pieces. Distance-sale CPA cooling-off applies.

How to compare 1 carat diamond prices

The dated prices above describe a specified sample of natural diamonds. A 1 carat weight alone does not determine a quote. Compare shape, cut, colour, clarity, laboratory, fluorescence and measurements, then the full VAT-inclusive price of the actual stones.

Compare 0.90 or 0.95 carats before choosing the full 1

Popular weight thresholds can carry a price premium. A stone just below the weight you searched for may offer a useful alternative, but there is no fixed saving or promise that two weights will look identical. Compare their millimetre dimensions and appearance alongside their prices.

A 1 carat round brilliant is typically around 6.5 mm across. This is an orientation figure: use the chosen diamond’s report for its actual dimensions. Shape, depth and setting also affect its presence on the hand.

Choose the appearance, then compare the grades

  • Cut and shape: compare the individual stone’s proportions and appearance. GIA’s overall cut grade applies to standard round brilliants in the D-to-Z colour range. Fancy shapes require their own assessment.
  • Colour: compare the diamond in the metal and setting you intend to use. The grade is useful, but the colour you notice is a personal choice.
  • Clarity: inspect visible inclusions, their position and any durability concerns. A VS or SI label alone does not establish that a stone is eye-clean.
  • Carat and dimensions: weight is not face-up width. Compare the measurements on each report alongside the price.

Use our 4Cs guide and report-reading guide to prepare a shortlist. Ask to see available images or arrange a viewing.

Rapaport is a benchmark; your quote is for an individual diamond

The Rapaport Price List gives benchmark asking-price indications in US dollars. It is not a record of completed transactions or a universal consumer price. The actual stone, supply costs, exchange rate and seller’s terms affect a rand quote. Check all inclusions rather than comparing a discount percentage alone.

Prodiam cuts diamonds at Procut DCW and also sources polished stones through the certified trade. Buying directly does not establish a fixed saving against another seller. Compare the report, stone and complete VAT-inclusive quote. A ring setting and making are additional to a loose-diamond price: our quote comparison guide shows what to check.

What moves the price of a 1 carat diamond

Use these factors alongside the dated sample above. The current quote must identify the actual diamond, its grades and all price inclusions.

FactorHow it moves the price
Cut gradeCompare cut quality and appearance on the actual stone. GIA’s overall cut grade applies to standard round brilliants in its D-to-Z range.
Colour gradeColour can change the price at comparable grades. Compare the appearance in your intended setting and the actual quotes.
Clarity gradeHigher clarity can command a premium. Inspect the individual inclusions; a grade alone does not guarantee an eye-clean stone.
Exact carat weightThe per-carat price steps up at the 1.00 ct threshold; a stone just under (e.g. 0.90 ct) looks the same face-up and can be quietly cheaper.
Rapaport list movementA benchmark of asking-price indications, not completed transactions or the final price of every stone.
Rand–dollar exchange rateExchange rates and supply costs can affect the rand quote. Compare VAT-inclusive prices and confirm delivery and other inclusions.
Fluorescence & finishAssess fluorescence, polish and symmetry with the individual diamond’s appearance and report; do not infer a fixed discount or resale value.
Supply routeCut in-house at Procut DCW, or sourced to order from the certified trade. Compare complete quotes; the supply route alone does not prove a saving.

Lab-grown vs natural, and what we sell

You will see one-carat lab-grown diamonds advertised at a small fraction of a natural stone’s price, and the gap is widening as lab-grown supply grows. They are real diamonds, chemically identical, and a legitimate choice, but they are a different product with a different value trajectory, and we are clear about which one we deal in.

Prodiam works in natural diamonds only. If you are weighing the two, our natural vs lab-grown vs moissanite guide lays out the differences honestly so you can decide before you ask us for a figure.

How to get your exact 1-carat figure

  1. 01

    See live prices

    Open the diamond search to see fully-landed ZAR prices and filter to your exact carat, colour, clarity and GIA Excellent cut. Shortlist anything that looks right.

  2. 02

    Tell us the spec

    Send your target grades and budget, or just say “a near-colourless, eye-clean one-carat round” and let us interpret it. We respond within 24 hours, by email, video or WhatsApp.

  3. 03

    Firm quote in writing

    We quote your chosen stone firm, in ZAR, including VAT, referenced to the Rapaport list, a real number for a real stone, not a range. Compare it against any retail quote for the same four grades.

  4. 04

    Verify the certificate

    Check the GIA report number yourself against the GIA report-check service. The grades on the paper are the grades you are paying for.

  5. 05

    Buy loose or as a ring

    Take the stone as a loose diamond or have it set into a custom ring — a carat stone this size suits a vintage, princess-cut or marquise setting particularly well, or browse every style we make. Delivered insured and overnight nationwide via Brink’s or G4S, with a written insurance valuation.

We are a director-led South African diamond dealer and cutting house, not a shopfront marking up someone else’s stones. If you want the honest answer on what your one-carat diamond should cost, the fastest route is to see the live prices and then ask Darren for a firm quote; he will come back within 24 hours.

1 carat diamond price: common questions

How much does a 1 carat diamond cost in South Africa?

For 1 carat diamonds in South Africa, our 8 September 2026 sample had a median of R61 300 at H colour. The middle half of sampled prices was R54 700–R65 800. This compares 0.95–1.09 ct stones at VS1–VS2 clarity, with an Excellent cut filter and no fluorescence. VAT and delivery for the loose stone are included; a setting is additional. Confirm the current price for your chosen diamond.

Why isn’t there one price for a 1 carat diamond?

Because “1 carat” is only the weight, one of four characteristics that set the price. Two diamonds that both weigh a carat can differ in value by several multiples depending on their cut, colour and clarity grades, and whether the cut is genuinely well made.

The international wholesale benchmark, the Rapaport price list, is itself a grid: it quotes a different per-carat figure for each colour-and-clarity combination at the one-carat size, and the polished diamond then trades at a discount or premium to that list depending on its exact make. Add the rand–dollar exchange rate on the day and you can see why a single “1 carat price” cannot exist.

The honest answer is a figure for your exact specification, which is why we quote firm, in writing, before any work begins.

Is a 1 carat diamond cheaper direct from a cutter than from a jeweller?

Ask us to compare the individual quotes. We cut some diamonds in-house and source others through the certified trade, so there is no fixed saving that applies to every stone. Compare the full VAT-inclusive price, laboratory report, measurements and service terms; we will explain how our selected diamond is priced.

What 1 carat diamond specification gives the best value in South Africa?

Start with the appearance you want and your total budget. For a round brilliant, compare the cut grade and actual dimensions; for a fancy shape, assess its proportions and appearance. Compare colour and clarity in the intended setting, and request images or a viewing to assess visible inclusions. A clarity grade alone does not guarantee an eye-clean 1 carat stone.

Are your 1 carat diamonds GIA certified?

Check the laboratory and report for the individual diamond. Prodiam sells natural diamonds; some are cut in-house and others are sourced as polished stones through the trade. A GIA report is verified with GIA, and another laboratory’s report with that laboratory. GIA gives an overall cut grade to standard round brilliants in its D-to-Z range, not every fancy shape.

Can I get a 1 carat diamond price if I’m not in Johannesburg?

Yes. Send your 1 carat specification and budget, and ask for the actual stone’s laboratory report and available photographs or video. Confirm the VAT-inclusive written quote, availability, sourcing lead time and insured delivery before committing. A complete ring also needs an agreed setting and production timeline.

Last reviewed: June 2026.