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Radiant|Natural|GIA

0.40ct H IF Radiant Natural Diamond

EX • H/IF • GIA 6555375861

Certificate GIA 6555375861

Diamond specifications and retailer prices

From £301 GBP
As of November 6, 2026
Save £655 GBP (69%) vs most expensive(unlock to see where)
14 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 6555375861. Listed at 14 retailers as of November 6, 2026, with a 218% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 6555375861
Dimensions5.18 × 3.65 × 2.44 mm
L/W Ratio1.42
Girdle conditionPolished
Key to symbols
Minor Details of Polish
Top View
5.18 mm3.65 mm0.40 ctH / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555375861
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 66.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
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: £1,346 GBP|Avg: £567 GBP|-3.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 7, 2026
Retailer 7£301 GBP
Retailer 5£353 GBP
Retailer 12£403 GBP
Retailer 13£412 GBP
Retailer 11£417 GBP
Retailer 9£434 GBP
Retailer 6£448 GBP
Retailer 3£509 GBP
Retailer 4£538 GBP
Retailer 8£560 GBP
Retailer 10£564 GBP
Retailer 2£956 GBP
NZ Jewellers£1,306 GBP

28 data points across 13 retailers

14 retailers£301 GBP to £956 GBP

A
Cheapest Retailer
-
£301 GBP
A
Retailer 2
-
£353 GBP
View
A
Retailer 3
-
£403 GBP
View
Retailer 4
-
£412 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
-
£509 GBP
View
B+
Retailer 9
-
£538 GBP
View
B+
Retailer 10
-
£560 GBP
View
B+
Retailer 11
-
£564 GBP
View
Retailer 12
-
£658 GBP
View
Price last confirmed 34 days ago
B
Retailer 13
-
£956 GBP
View
Most Expensive
NZ Jewellers
4e73775e-1721-4856-9a81-c932d06c6e6d · Nov 5
£1,306 GBP
$1,748 USD
View
Price under review
13 more retailers have this diamond
Prices start from £301 GBPSave up to £655 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