Certified diamonds
Natural diamonds
Each of these stones formed deep underground billions of years ago — making natural diamonds rare, with no two alike. All come with an independent laboratory certificate.
- GIA or IGI certificate
- Insured delivery
- 14-day returns
Shape
Filters
Filters
Carat weight (ct)
Price
Colour
D — colourless, K — a noticeable warm tone.
Clarity
FL — flawless, SI2 — inclusions may be visible.
Cut
Cut determines brilliance. Some fancy shapes have no cut grade.
Polish
Symmetry
Fluorescence
Laboratory
Table
Depth
L/W ratio
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4C guide
How to choose a diamond
Four certificate characteristics that determine a stone’s appearance and price.
Weight
Carat weight (1 ct = 0.2 g) indicates a stone’s size; prices rise sharply at whole-carat marks such as 1.00 ct.
More in our guideColour
Our range runs from D (colourless) to K (noticeably warm in tone) — the closer to D, the rarer and more expensive the stone.
More in our guideClarity
Describes tiny inclusions inside the stone; from VS2 upwards, they are usually invisible to the naked eye.
More in our guideCut
The quality of the cut determines how much light the stone reflects — it has the greatest effect on brilliance.
More in our guide