Know what you are buying

The 4Cs — cut, colour, clarity and carat — decide what a diamond costs and how it looks. Here they are in plain English, shown on real rings from our collection, with honest advice on where your money actually shows.

Carat — weight, not size

A carat is a unit of weight (0.2 grams), not a measurement of how big the stone looks. Two 1-carat diamonds can face up different sizes depending on their shape and proportions. Tap a weight to see it on a real hand, in a real ring from our collection:

0.5 carat diamond ring worn on a hand

0.5 carat

5.2 mm across (round cut)

Real ring: Solitaire Gold Engagement Ring with 0.5ct Diamonds — $1,105 CAD

  • Prices jump at the round numbers — 1.0, 1.5, 2.0 ct. A 0.9 ct stone looks nearly identical and usually costs noticeably less.
  • Elongated shapes face up bigger. An oval, marquise or pear shows more finger coverage per carat than a round.
  • “Total carat weight” (tcw) counts the centre stone plus the side stones. Our specifications table on each product page shows the total for that ring.

Cut — the sparkle itself

Cut is the only one of the 4Cs shaped entirely by human hands, and it is the one your eye actually sees: a well-cut diamond throws light back at you as sparkle. A poorly cut one leaks light and looks dull, whatever its colour or clarity. Grades, in plain terms — tap one:

Excellent: maximum sparkle. Light enters the top and returns straight back to your eye. This is the grade to aim for.

Shape is part of cut — the ten classics, on real rings

Colour — how white is white

Diamond colour is graded from D (completely colourless) to Z (visibly warm). The differences are subtle — and so is what you should pay for them. Tap a band:

Colourless (D–F): icy white and the rarest grades. You pay a premium for a difference most people cannot see once the stone is set.

Metal matters: a warm-toned stone in a yellow gold band looks whiter than the same stone in white gold. Choose them together.

Clarity — what the eye can see

Almost every diamond has tiny natural marks (inclusions) from when it formed. Clarity grades how visible they are under 10× magnification. The only question that matters on a hand: can you see them without a loupe? Tap a band:

Flawless to internally flawless (FL–IF): no inclusions visible at 10×. Collector territory — the premium is for rarity, not for looks.

Where we would spend

  1. Cut first. It is the sparkle, and no other grade can rescue a dull cut.
  2. Colour G–J. White on the hand, without the colourless premium.
  3. Clarity VS2–SI1, eye-clean. If you cannot see it, do not pay to remove it.
  4. Carat last — and just under the round numbers. 0.9 ct instead of 1.0 ct is the oldest saving in the trade.

Shopping moissanite? Moissanite is not graded on the diamond 4Cs scale in the same way — it is sold by size, is virtually always eye-clean and near-colourless, and costs a fraction of a diamond. The carat photos above still show you exactly how each size looks on a hand.

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