Education

The 4Cs

Cut, colour, clarity, and carat decide a diamond’s beauty — and its price. Here’s each one in depth, with the one rule that matters most: get the cut right first, then balance the rest to your budget.

1 / Cut

Cut — the one that makes it sparkle

Cut is the only C shaped by human hands, and the one that decides how alive a diamond looks. It governs three things:

  • Brilliance

    The white light returned to your eye.

  • Fire

    The flashes of rainbow colour.

  • Scintillation

    The sparkle that dances as it moves.

Try it — choose a cut grade

Excellent

Light lostBrilliance

Light returns almost entirely to your eye — maximum brilliance and fire. Worth every penny.

Types of cut

Beyond grade, the style of faceting changes a diamond’s whole character.

  • Brilliant cut

    Triangular and kite facets fire light back as intense sparkle — the most brilliant style.

    Round, oval, pear, marquise, cushion, radiant

  • Step cut

    Long, parallel facets create a calm, mirror-like “hall of mirrors” and reward high clarity.

    Emerald, Asscher

  • Mixed cut

    Combines brilliant and step faceting — sparkle with clean, modern lines.

    Radiant, some cushions

What to buy

Excellent (or Ideal for round). Cut is where your budget works hardest, so never compromise here. Very good is the smart step down if you need to save.

2 / Colour

Colour — how white it reads

Colour grades how little colour a diamond shows — from D (utterly colourless) toward Z (light warmth). The less colour, the rarer; but past a point, the difference disappears in a ring.

Slide across the colour scale

D

Colourless

Icy white and rare — stunning in any metal.

What to buy

G–J (near-colourless) is the value sweet spot — they look white face-up, especially in yellow or rose gold. Choose D–F for certified icy-white, particularly in platinum or white gold. Every Margot Vane diamond is selected at the colourless end.

3 / Clarity

Clarity — its natural fingerprint

Clarity grades the tiny natural marks — inclusions — inside a diamond, from Flawless (FL) to Included (I). Most are microscopic. What matters for a ring is simple: can you see anything with the naked eye?

Slide from flawless to included

FL

Eye-clean

No inclusions visible to the naked eye.

What to buy

VS1–VS2 is the sweet spot — eye-clean, with inclusions only a loupe will find. SI can be eye-clean too (and great value) when the report checks out. Paying for FL/IF buys rarity you simply can’t see.

4 / Carat

Carat — weight, not size

Carat is a diamond’s weight — one carat is 200 milligrams. Two stones of equal carat can look different sizes depending on cut and shape, and prices jump at the round “magic numbers.”

Slide to grow the diamond

1.00 ct

6.5 mm wide

Cut and shape decide how large this looks.

What to buy

Sit just under a magic number — a 0.90 ct looks almost identical to a 1.00 ct for noticeably less. Then let a great cut and an elongated shape do the rest of the work.

Putting it together

How to spend your budget

A simple order of priorities that gets you the most beautiful diamond for the money.

  1. 1. CutDon’t compromise

    Lock in Excellent first — it earns the sparkle.

  2. 2. ClarityEye-clean

    VS, or a verified SI — clean to the eye is all you need.

  3. 3. ColourMatch the metal

    Near-colourless and up, chosen for the metal you love.

  4. 4. CaratFlex to budget

    Spend what’s left — just under a magic number.

Put it into practice

Every Margot Vane diamond is lab-grown and certified by GIA, IGI, or GCAL — so the quality is verified, not promised.

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