The formation record · why natural is the point

A lab stone took a few weeks. Yours took deep time.

Every natural diamond on these pages followed the same impossible route. This is the journey you are wearing.

  1. 150–200 km down I

    Carbon under a continent

    Formed in the mantle beneath ancient cratons, at pressures around 50,000 atmospheres and temperatures over 1,000 °C. Most natural diamonds are between one and three billion years old.

  2. The violent lift II

    The kimberlite eruption

    A volcanic pipe fires the stones toward the surface fast enough that they survive the trip. No eruption, no diamond. South Africa’s kimberlites named the rock itself, after Kimberley.

  3. Surface, found III

    Recovered and sorted

    Mined from the pipe or the rivers and beaches it fed, then sorted and graded. Provenance starts here, and South African goods carry some of the oldest mining paper trails on earth.

  4. The cutter’s bench IV

    Cut for light

    A cutter spends the stone’s weight to buy its brilliance. This is the only step a human controls, and it is why I keep writing that cut quality is the C worth paying for.

  5. Year zero V

    Worn, kept, passed on

    A certificate ties the stone to its grades, and the stone outlives every owner it meets. Deep time is the difference you cannot manufacture, and it is the whole reason this site exists.

A solitaire diamond engagement ring rests on cream linen in soft window light. 1

Best engagement rings

Pricing in ZAR by tier, the supplier models worth understanding, and the quote checks serious buyers should run.

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Two simple wedding bands lie on a brushed brass tray in natural daylight. 2

Best wedding rings

Plain matched pairs, diamond eternity bands, shaped bands fitted to a specific engagement ring.

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A white gold diamond tennis bracelet is draped across a dark slate surface. 3

Best diamond tennis bracelets

CTTW pricing in ZAR, the 3 cttw sweet spot, natural-diamond pair matching, where matched-melee parcels are sourced.

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A diamond tennis necklace catches overhead light against a dark velvet display. 4

Best diamond tennis necklaces

The highest-AOV SA category. 16 inch chokers, graduated necklaces, length adjustments.

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A pair of round brilliant diamond stud earrings faces the camera in soft daylight. 5

Best diamond earrings

Studs, huggies, drops, chandeliers. Pair-matching is the hardest variable; in-house cutter advantage compounds.

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A pair of round brilliant diamond stud earrings sit on cream linen in soft natural light. 6

Best diamond stud earrings

The deep-dive on stud earrings. Why pair-matching matters more than any other category, and where SA buyers should start.

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A solitaire diamond pendant rests on dark walnut with a fine white gold chain. 7

Best diamond pendants

Solitaire, halo, custom Africa-themed. The price-to-impact category. Chain length and clasp guidance.

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Loose round brilliant diamonds sit on a black grading tray beside a brass loupe. 8

Best place to buy diamonds South Africa

Compare supplier models, written quotes, GIA proof, and retail benchmarks before you pay.

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Loose round brilliant diamonds rest on a grading tray beside a brass loupe. 9

What a diamond actually costs

The full price range for a certified one carat in South Africa, and where the margin sits between trade and retail.

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A cutting bench with parcel papers and a loupe, photographed in workshop light. 10

Dealers vs retailers: a 6,482-review study

An original study of 179 South African businesses, split by Google's own category labels, on rating, price sentiment and trust.

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A solitaire diamond ring photographed beside a folded parcel paper. 11

Selling a diamond in South Africa

The three routes, what you will realistically be offered, and why resale is where the original retail margin becomes visible.

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A round brilliant diamond beside a millimetre gauge on a dark surface. 12

Diamond size: carat is weight, not size

Carat to millimetre for round brilliants, face-up area compared, and why a 0.90 reads almost the same as a 1.00.

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Loose diamonds photographed in daylight on a neutral background. 13

Where to buy diamonds in Cape Town

Why the cutting trade concentrates in Johannesburg, and how a Cape buyer decides between local retail and buying at trade level.

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A pair of round brilliant diamond stud earrings faces the camera in soft daylight. 14

Diamond earrings Cape Town

A Cape Town buyer route for natural diamond studs and matched pairs, with pair-matching checks before price.

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A white gold diamond tennis bracelet is draped across a dark slate surface. 15

Tennis bracelet South Africa

The exact high-volume bracelet search, turned into a natural-diamond parcel-match route.

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A solitaire diamond engagement ring rests on cream linen in soft window light. 16

White gold engagement rings

18ct white gold, natural GIA centre stones, and why the loose-stone quote should come before the setting.

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A solitaire diamond engagement ring rests on cream linen in soft window light. 17

Oval engagement rings

Bow-tie risk, GIA limits on fancy shapes, face-up spread, and the written quote trail.

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A solitaire diamond ring rests on cream linen in soft window light. 18

Diamond rings for women

Engagement, anniversary, eternity, and right-hand rings, all routed through the natural stone first.

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Loose round brilliant diamonds sit on a black grading tray beside a brass loupe. 19

Loose diamonds for sale

The cleanest serious-buyer comparison. Natural GIA loose stone first, setting second.

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A diamond grading loupe, certificate, and loose stones sit on a cutting-house bench. 20

GIA certified diamonds

How to verify reports, what GIA proves, and how to compare quote structure across supplier models.

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A solitaire diamond ring rests on cream linen in soft window light. 21

Marquise diamond ring

A shape-specific guide for the high-intent marquise search, with bow-tie and point-protection checks.

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A solitaire diamond ring rests on cream linen in soft window light. 22

Pear shaped diamond ring

Pear shape pricing, daylight video checks, and exact-stone inspection notes for natural stones.

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A solitaire diamond engagement ring rests on cream linen in soft window light. 23

Engagement rings Cape Town

A Cape Town buyer path that benchmarks the natural GIA centre stone nationally before retail.

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Two simple wedding bands lie on a brushed brass tray in natural daylight. 24

Mens wedding rings

Plain bands, diamond bands, metal weight, and how to compare natural-diamond quotes.

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Two simple wedding bands lie on a brushed brass tray in natural daylight. 25

Wedding rings for women

Plain, shaped, half-eternity, and full-eternity bands routed through the natural diamond quote first.

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A round brilliant natural diamond rests on black velvet under directional jewellery studio light. 26

Lab grown diamond rings

A natural-only opinion page built to intercept lab-grown ring searches and explain the value problem.

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Loose round brilliant diamonds sit on a black grading tray beside a brass loupe. 27

Diamond wholesalers Johannesburg

The buyer route for asking who sells directly to the public and what manufacturer-direct should prove.

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A solitaire diamond engagement ring rests on cream linen in soft window light. 28

Custom engagement rings Johannesburg

Custom, inherited-stone, and own-diamond questions routed through natural GIA centre-stone comparison.

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A diamond grading loupe, certificate, and loose stones sit on a cutting-house bench. 29

Ethical natural diamonds

Kimberley Process, GIA checks, and proof-backed natural sourcing without vague ethical sales language.

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A solitaire diamond engagement ring rests on cream linen in soft window light. 30

Round brilliant engagement rings

The classic proposal search. GIA Excellent cut, natural stones, and why a cutter quote matters first.

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A solitaire diamond engagement ring rests on cream linen in soft window light. 31

Solitaire engagement rings

A centre-stone-first route for the cleanest engagement ring style, with retail and direct-supplier benchmarks.

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A diamond engagement ring rests on cream linen in soft window light. 32

Halo engagement rings

Natural centre stones, matched melee, maintenance checks, and how to avoid paying for decoration over diamond quality.

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A diamond engagement ring rests on cream linen in soft window light. 33

Emerald cut engagement rings

Step-cut clarity, ratio, windowing, and the stricter inspection route I would use before paying.

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A white metal diamond engagement ring rests on cream linen in soft window light. 34

Platinum engagement rings

When platinum is worth it, when 18ct white gold is smarter, and how not to steal budget from the centre stone.

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A diamond engagement ring rests on cream linen in warm natural light. 35

Yellow gold engagement rings

Warm metal, natural diamond colour trade-offs, and quote checks before setting decisions.

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Two wedding bands lie on a brushed brass tray in natural daylight. 36

Diamond eternity rings

Full vs half eternity, natural melee matching, resizing limits, and the safer quote path.

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A pair of diamond earrings faces the camera in soft daylight. 37

Diamond huggie earrings

Everyday natural diamond earrings where hinge quality, matching, and metal matter more than product photos.

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A pair of diamond earrings faces the camera in soft daylight. 38

Diamond drop earrings

Occasion earrings, natural diamond matching, weight, movement, and the retail benchmark route.

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A solitaire diamond ring rests on cream linen in soft window light. 39

Custom diamond rings

Custom, inherited-stone, anniversary, and right-hand ring questions routed through a natural-stone quote first.

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A white gold diamond tennis bracelet is draped across a dark slate surface. 40

Diamond bracelets

The broad bracelet search that leads into tennis bracelets, bangles, matched parcels, and natural diamond specs.

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A diamond tennis necklace catches overhead light against a dark velvet display. 41

Diamond necklaces

Solitaire pendants vs tennis necklaces, with the quote split between centre-stone and matched-parcel decisions.

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A writing desk holds a notebook, brass loupe, and loose diamond in warm window light. 42

Upgrade engagement ring Johannesburg

Upgrade, inherited-stone, and trade-in questions handled carefully, with separated stone and setting quotes.

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A loose diamond, brass tweezers, and jeweller loupe sit beside an unmarked checklist sheet. 43

Diamond valuation Johannesburg

Insurance value, resale value, replacement value, and when a new natural-diamond quote belongs in the decision.

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A solitaire diamond pendant rests on dark walnut with a fine white gold chain. 44

Diamond chain

Diamond chains, pendants, station necklaces, and tennis chains, with the natural stone or parcel priced first.

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A diamond ring rests on cream linen in soft window light. 45

Gold diamond rings

Yellow, white, and rose gold rings where the natural diamond quote should come before the metal emotion.

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A pair of round brilliant diamond stud earrings faces the camera in soft daylight. 46

Gold diamond earrings

Gold stud, huggie, and drop earring searches routed through natural diamond pair matching first.

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A white gold diamond tennis bracelet is draped across a dark slate surface. 47

Gold diamond bracelet

Bracelet, bangle, and tennis-bracelet intent focused on natural parcel matching, clasp safety, and gold value.

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A solitaire diamond pendant rests on dark walnut with a fine white gold chain. 48

Gold diamond pendant

Solitaire, halo, and inherited-stone pendant routes where the natural diamond quote comes first.

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Two simple wedding bands lie on a brushed brass tray in natural daylight. 49

Gold diamond wedding rings

Diamond bands, half-eternity bands, full-eternity bands, and natural melee checks before retail.

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A diamond engagement ring rests on cream linen in soft window light. 50

Princess cut engagement rings

Square diamond buying guide, corner protection, daylight inspection, and the written quote route.

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A diamond engagement ring rests on cream linen in soft window light. 51

Cushion cut engagement rings

Romantic fancy-shape guide focused on ratio, brightness, natural origin, and exact-stone comparison.

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Two simple wedding bands lie on a brushed brass tray in natural daylight. 52

Ring size chart

The practical sizing utility buyers search before engagement rings and wedding bands, with a stone-first quote path.

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Loose round brilliant diamonds sit on a black grading tray beside a brass loupe. 53

Best jewellery stores

The jewellery-store and near-me search reframed for natural diamond buyers, with model-first comparisons.

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A laptop, grading loupe, and loose diamond parcel sit on a dark jeweller desk. 54

Buy diamonds online

Remote quote trail, GIA verification, and national buying checks before paying for a serious natural diamond.

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Two simple wedding bands lie on a brushed brass tray in natural daylight. 55

Wedding bands

Exact wedding-band language for plain bands, diamond bands, men, women, and daily-wear sizing.

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A brass jewellery scale weighs a small parcel of diamonds on a dark workbench. 56

Gold buyers Johannesburg

Gold and diamond jewellery should be valued as metal, stones, and repurpose potential before scrap.

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A pricing notebook, brass loupe, loose diamond, and scale sit on a dark wood desk. 57

Sell gold jewellery

The sell-gold search with diamonds, heirloom value, and remake options separated before scrap offers.

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A solitaire diamond ring rests on cream linen in soft window light. 58

Sell diamond ring

buy-back, gold value, diamond value, and repurpose math before accepting any cash offer.

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Loose round brilliant diamonds sit on a black grading tray beside a brass loupe. 59

Diamond jewellery buy-back

A careful route for natural diamond jewellery buy-back, remounting, upgrades, and comparisons.

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A writing desk holds a notebook, brass loupe, and loose diamond in warm window light. 60

Repurpose diamond ring

Inherited rings, old gold, resets, remakes, and when keeping the natural diamond beats selling.

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A loose diamond, brass tweezers, and jeweller loupe sit beside an unmarked checklist sheet. 61

Jewellery valuation Johannesburg

Insurance value, buy-back value, scrap value, and repurpose value separated before deciding.

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A stone dish of loose diamonds, a brass loupe and tweezers on a pale desk, with the Durban coastline and palms far out of focus beyond. 62

Jewellery stores Durban

What the stone should cost before you walk in, and how a coastal buyer handles a purchase made 570km from the cutting trade.

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A black stone tray, brass loupe and ring clamp on a worn workbench, with mine dumps on the Johannesburg horizon through a steel-framed window. 63

Jewellery stores Johannesburg

The city has a retail map and a trade map, and it is the only one in the country where you can reach both in an afternoon.

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A solitaire ring and brass loupe on polished dark stone, with the glass towers of the Sandton skyline out of focus behind. 64

Jewellery stores Sandton

A district built for finished goods and brand, and very good at it. What that costs, and how to judge four counters on foot.

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Parcel papers of loose diamonds and a brass loupe on a sandstone desk, with jacarandas in purple bloom out of focus beyond the window. 65

Jewellery stores Pretoria

Real bench depth locally, and the trade corridor 60km away. Judge the store on the bench, price the stone where stones are the product.

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A brass jewellery scale weighs a small parcel of round brilliant diamonds on a dark workbench. 66

1 carat diamond price SA

Manufacturer-direct vs boutique vs chain pricing on the most-purchased SA diamond carat band, with the RAP-minus math.

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A brass jewellery scale weighs a small parcel of round brilliant diamonds on a dark workbench. 67

2 carat diamond ring price SA

High-value natural GIA pricing where the manufacturer-direct quote can change the whole ring budget.

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Three round brilliant diamonds of increasing size sit in a row on dark slate. 68

3 carat diamond ring price SA

The serious-buyer price band. GIA spec, supplier tier, and why the first quote should not be retail.

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A brass jewellery scale weighs a small parcel of diamonds on a dark workbench. 69

How wholesale pricing works

The 5-layer stack from rough through retail. Worked example for a 1 ct G/SI1 round brilliant.

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A pricing notebook, brass loupe, loose diamond, and scale sit on a dark wood desk. 70

Rapaport list and jeweller discounts

How the Rapaport list sets wholesale benchmarks and how to convert RAP-minus quotes into real prices.

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Three round brilliant diamonds of increasing size sit in a row on dark slate. 71

Sightholder vs Beneficiation vs OTC

The supply-chain tiers explained. What each label means for pricing and end-customer narrative.

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A brass jewellery scale weighs a small parcel of diamonds on a dark workbench. 72

Direct from manufacturer diamonds

What manufacturer-direct should actually prove: GIA report, loose-stone price, setting price, and buy-back.

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Three round brilliant diamonds of increasing size sit in a row on dark slate. 73

Investment-grade natural diamonds

A careful natural-only guide for high-value buyers. GIA proof, cut quality, resale limits, and realistic value language.

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A loose diamond, brass tweezers, and jeweller loupe sit beside an unmarked checklist sheet. 74

Diamond buying checklist

A 24-step pre-purchase route for serious buyers: written quote, GIA check, same-spec comparison, VAT, return terms, and after-care.

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A round brilliant natural diamond rests on black velvet under directional jewellery studio light. 75

Natural vs lab-grown diamonds

Why this notebook recommends natural only for serious, resale-aware, heirloom, and upgrade-path diamond purchases.

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A loose round brilliant diamond sits beside a brass loupe and blank note cards. 76

South African diamond buying FAQ

50 questions answered. Definitive 2026 reference for every SA diamond buyer.

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Four loose round brilliant diamonds are arranged by size on dark slate. 77

Diamond glossary

60+ terms defined. The 4Cs, supply-chain tiers, certification, cutting, trade vocabulary.

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A loose diamond, brass tweezers, and jeweller loupe sit beside an unmarked checklist sheet. 78

Diamond buying checklist

24 steps to get a SA diamond purchase right, from research through after-sale.

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An antique brass balance scale weighing a single loose round brilliant diamond against tiny calibration weights. 79

Diamond price per carat

Why per-carat price is not linear, what the magic sizes cost you, and how to compare two quotes properly.

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Seven loose diamonds in a row on black velvet, each a different outline, with brass tweezers alongside. 80

Diamond shapes and cuts

Shape is the outline, cut is the workmanship, and GIA only grades cut on rounds. What that means for every other shape.

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Eight loose round brilliant diamonds on a white grading tray, graded left to right from colourless to faintly warm. 81

Colour and clarity charts

The full D to Z and FL to I3 scales, plus the money question: the lowest grade at which nobody can tell.

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A precision jeweller scale displaying a parcel of loose diamonds beside brass gram weights. 82

Diamond price per gram

One carat is 0.2 grams. What a gram of diamond actually costs, and why karat and carat are not the same word.

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A loose diamond held in brass tweezers under a jeweller loupe beside a folded grading report. 83

How to tell if a diamond is real

Which home tests mean anything, which are folklore, and the three different questions people are really asking.

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A large uncut rough diamond crystal with frosted natural faces resting on deep navy velvet. 84

The Cullinan and the Star of Africa

The largest rough diamond ever found came out of South African ground, was cut in Amsterdam, and sits in London.

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Blue-grey kimberlite rock samples and two small rough diamond crystals in a shallow brass dish. 85

Diamond mines in South Africa

Which mines still run, which have closed, and why the cutting skill stayed after the volume left.

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A diamond grading loupe, certificate, and loose stones sit on a cutting-house bench. 86

SA diamond manufacturers

The cutting houses serving jewellers. Sightholder, DBCM Beneficiation Customer, OTC.

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Loose diamonds and a brass loupe sit beside an open supplier notebook. 87

Top wholesale suppliers compared

A comparison of 15 wholesale diamond suppliers worldwide.

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A laptop, grading loupe, and loose diamond parcel sit on a dark jeweller desk. 88

RapNet vs IDEX Online

The two main B2B diamond marketplaces, side by side.

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Finished diamond rings on cream suede inside a lit display case, seen from outside through the glass. 89

Diamond retailers in South Africa

The last tier in the chain: what it is, how keystone pricing works, and why no honest list of the best retailers exists.

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About this site

Natural Diamond covers the South African natural-diamond trade. I work in that trade, so read this as an argument from someone with a position in the industry rather than a neutral survey of it. The business I am connected to is excluded from every dataset published here, and this site names no business and recommends none. I take a natural-only stance and do not put factory-grown diamonds forward for heirloom, resale-aware or upgrade-path purchases. Pricing figures are researched ranges and estimates, never quotes, and every one of them moves with the Rapaport list and the rand, so check the arithmetic against a current list before you rely on it.

Read our editorial policy for how we research, what conflicts we disclose, and how to submit corrections.