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Radiant|Natural|GIA

0.40ct H IF Radiant Natural Diamond

EX • H/IF • GIA 2566183103

Certificate GIA 2566183103

Diamond specifications and retailer prices

From £301 GBP
As of November 6, 2026
Save £1,005 GBP (77%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,306 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.4ct natural radiant diamond

This 0.4ct natural radiant sits in the sub-half-carat band, graded H colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2566183103. Listed at 13 retailers as of November 5, 2026, with prices from £301 to £1,306, a £1,005 spread on the same certified stone. NZ Jewellers lists it at £1,306. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.40
Carat
H
Colour
IF
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2566183103
Dimensions5.12 × 3.70 × 2.48 mm
L/W Ratio1.38
Girdle conditionPolished
Key to symbols
Surface Graining, Minor Details of Polish
Top View
5.12 mm3.70 mm0.40 ctH / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2566183103
Side View
Table 65.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 67.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £1,306 GBP|Low: £301 GBP|High: £1,319 GBP|Avg: £578 GBP|-1.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 2£301 GBP
Retailer 3£403 GBP
Retailer 6£409 GBP
Retailer 10£417 GBP
Retailer 4£434 GBP
Retailer 11£448 GBP
Retailer 9£533 GBP
Retailer 5£560 GBP
Retailer 8£564 GBP
Retailer 7£962 GBP
NZ Jewellers£1,306 GBP

32 data points across 11 retailers

13 retailers£301 GBP to £1,306 GBP

A
Cheapest Retailer
-
£301 GBP
A
Retailer 2
-
£353 GBP
View
A
Retailer 3
-
£403 GBP
View
Retailer 4
-
£409 GBP
View
Price last confirmed 4 days ago
A
Retailer 5
-
£417 GBP
View
B+
Retailer 6
-
£434 GBP
View
B+
Retailer 7
-
£448 GBP
View
B+
Retailer 8
-
£533 GBP
View
B+
Retailer 9
-
£560 GBP
View
B+
Retailer 10
-
£564 GBP
View
Retailer 11
-
£639 GBP
View
Price last confirmed 34 days ago
B
Retailer 12
-
£962 GBP
View
Most Expensive
B
NZ Jewellers
b09536c9-3236-461a-bc89-202783303be6 · Nov 5
£1,306 GBP
$1,748 USD
View
12 more retailers have this diamond
Prices start from £301 GBPSave up to £1,005 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.

A
0.40ct Radiant
£301 GBP