Select your centre stone
Every stone independently graded and certified.
311 results
1.50ct Radiant Natural Diamond (Colour H, Clarity VS2, GIA Certified)
1.51ct Radiant Natural Diamond (Colour D, Clarity VS2, GIA Certified)
1.51ct Radiant Natural Diamond (Colour E, Clarity VS2, GIA Certified)
1.24ct Radiant Natural Diamond (Colour H, Clarity VS2, GIA Certified)
1.20ct Radiant Natural Diamond (Colour H, Clarity VS2, GIA Certified)
1.20ct Radiant Natural Diamond (Colour H, Clarity VS1, GIA Certified)
0.90ct Radiant Natural Diamond (Colour E, Clarity VS2, GIA Certified)
0.90ct Radiant Natural Diamond (Colour H, Clarity VS2, GIA Certified)
0.90ct Radiant Natural Diamond (Colour H, Clarity VS1, GIA Certified)
0.70ct Radiant Natural Diamond (Colour H, Clarity VS1, GIA Certified)
0.70ct Radiant Natural Diamond (Colour G, Clarity VS2, GIA Certified)
0.50ct Radiant Natural Diamond (Colour H, Clarity VS2, Cut VG, GIA Certified)
0.51ct Radiant Natural Diamond (Colour H, Clarity VVS1, GIA Certified)
0.50ct Radiant Natural Diamond (Colour H, Clarity VVS2, Cut EX, GIA Certified)
3.00ct Marquise Natural Diamond (Colour H, Clarity VS1, GIA Certified)
3.01ct Marquise Natural Diamond (Colour E, Clarity VS1, Cut VG, GIA Certified)
2.50ct Marquise Natural Diamond (Colour D, Clarity VVS1, Cut EX, GIA Certified)
2.51ct Marquise Natural Diamond (Colour D, Clarity VS2, GIA Certified)
2.50ct Marquise Natural Diamond (Colour E, Clarity VS2, GIA Certified)
2.01ct Marquise Natural Diamond (Colour E, Clarity VS2, Cut EX, GIA Certified)
2.01ct Marquise Natural Diamond (Colour F, Clarity VS2, GIA Certified)
2.00ct Marquise Natural Diamond (Colour E, Clarity IF, GIA Certified)
1.51ct Marquise Natural Diamond (Colour D, Clarity VS1, GIA Certified)
1.20ct Marquise Natural Diamond (Colour E, Clarity VS1, GIA Certified)
GIA Certified Diamonds
The Gemological Institute of America invented the grading vocabulary the entire trade now uses — the colour letters, the clarity scale, the four Cs themselves. It is a non-profit, it does not buy or sell stones, and it is generally accepted as the strictest of the major laboratories.
Strict has a practical meaning. The same physical diamond submitted to different laboratories can come back with different letters, and the gap is not random: it usually runs in the direction of the more generous grader. A stone graded H by GIA may well be called G elsewhere. This is why comparing two certificates from two laboratories on price alone is misleading, and why a GIA stone that looks more expensive per carat is often not more expensive at all once the grades are aligned.
GIA grades both mined and laboratory-grown diamonds, and reports the growth method on the latter. Every stone in this collection carries its own report, and the report number is on the product page so you can verify it directly with GIA before you buy anything.
Each one also has a 360° video, because a certificate describes a stone but it does not show you one.
Questions people ask before buying
Are these diamonds certified?
Yes. Every stone is graded by GIA, IGI or HRD, and the report number is shown on the stone's page so you can verify it directly with the laboratory. A stone certified by any other laboratory, or ungraded, cannot be bought here at all.
Does the price include a setting?
No. Loose diamonds and ring settings are priced separately, so you can pair any stone with any setting in a compatible shape. The ring builder shows the two together and the combined total before you order.
What should I prioritise when choosing?
Cut first — it is the only grade you can see across a room. Then clarity down to eye-clean, usually VS2 or SI1. Then colour: G or H reads white in platinum, I or J in yellow gold. Then buy just under a landmark weight, because 0.95 ct looks like 1.00 ct and costs less. The guide to the 4Cs explains the trade-offs in full.
How much is shipping?
Nothing. Every order ships free and fully insured, anywhere in the world, at any order value. Import duties and taxes outside the United States are the recipient's responsibility.
Can I return it?
Yes, within 30 days, unworn and in its original packaging with the certificate. The return leg is arranged and paid by you, and must be insured and tracked.
Is there a warranty?
A lifetime warranty against any manufacturing defect, for as long as you own the piece. Full detail on the FAQ page.