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Radiant|Natural|GIA

1.02ct J SI1 Radiant Natural Diamond

VG • J/SI1 • GIA 5166926778

Certificate GIA 5166926778

Diamond specifications and retailer prices

From £3,447 GBP
As of November 7, 2026
Save £382 GBP (10%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £5,405 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.02ct natural radiant diamond

This 1.02ct natural radiant sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5166926778. Listed at 5 retailers as of November 6, 2026, with a relatively tight 11% spread, which is unusual at this carat range and suggests competitive pricing across the listings. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.02
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 5166926778
Dimensions5.48 × 5.36 × 3.81 mm
L/W Ratio1.02
Top View
5.48 mm5.36 mm1.02 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 5166926778
Side View
Table 69.0%CrownGirdlePavilionCuletDepth 71.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 7
Current: £5,405 GBP|Low: £3,387 GBP|High: £5,485 GBP|Avg: £4,008 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 7, 2026
Retailer 4£3,430 GBP
Retailer 2£3,447 GBP
Retailer 3£3,829 GBP
Retailer 5£3,848 GBP
MOH London£5,405 GBP

45 data points across 5 retailers

5 retailers£3,447 GBP to £3,829 GBP

Retailer 1
-
£3,430 GBP
Price last confirmed 29 days ago
B
Retailer 2
-
£3,447 GBP
View
C
Retailer 3
-
£3,829 GBP
View
Retailer 4
-
£3,848 GBP
View
Price last confirmed 15 days ago
Most Expensive
MOH London
5FA68F51E · Nov 4
£5,405 GBP
View
Price under review
4 more retailers have this diamond
Prices start from £3,447 GBPSave up to £382 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B
1.02ct Radiant
£3,447 GBP