How light returns
Cut is the only measure shaped by people. A well-proportioned diamond returns light through the top as brightness and sparkle; a poorly cut one can look dull or smaller than its weight.
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Learn
Diamond Guide
The four measures that decide how a diamond looks, a short guide to coloured stones, and how to care for your jewellery.
The 4Cs
How diamonds are graded
Diamonds are described by four measures. Together they explain why two stones that look alike can differ in value.
How white it looks
White diamonds are graded on a scale from D (colourless) to Z (light yellow or brown). Once set, stones in the near-colourless range look white to most eyes.
D–F colourlessG–J near colourlessK–M faint
What is inside
Most diamonds have tiny natural marks called inclusions. Clarity grades describe how visible they are under 10× magnification. Many are invisible to the eye.
FL / IFVVS1–2VS1–2SI1–2I1–3
How much it weighs
Carat is weight: one carat is 0.2 grams. Two stones of the same weight can look different in size depending on how they are cut. Pavé and cluster pieces combine many small stones into a larger look.
1 ct = 0.2 gTotal weight (ct tw)
Coloured stones
Ruby, emerald and sapphire
Ruby
A red variety of the mineral corundum. Prized for a strong, even red; very hard and well suited to rings worn every day.
Emerald
The green variety of beryl. Natural inclusions are expected and often called its "garden". Softer than ruby, so it deserves a little extra care.
Sapphire
Corundum like ruby, best known in deep blue. Hard and durable, and a classic partner for white diamonds.
Caring for your jewellery
- Put jewellery on last, after perfume, lotion and hairspray.
- Take rings off for the gym, gardening, cleaning and swimming.
- Clean with lukewarm water, a drop of mild soap and a soft brush, then dry with a lint-free cloth. Clean emeralds more gently and avoid soaking them.
- Store pieces separately so diamonds do not scratch other jewellery or gold.
- Bring your pieces to us to have settings and clasps checked from time to time.
Questions?
We are happy to explain any of this with a stone in hand. Book a viewing
Private viewings
Speak with a specialist.
Ask about any piece, sizes or a private viewing. We reply on WhatsApp and by email.