Radiant|Natural|GIA

0.40ct D IF Radiant Natural Diamond

ID • D/IF • GIA 26

Certificate GIA 26

Diamond specifications and retailer prices

From £831 GBP
$1,113 USD
As of October 31, 2026
Save £198 GBP (19%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £2,399 GBP at NZ Jewellers · As of October 30, 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 D colour (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. Listed at 7 retailers as of October 31, 2026, with a relatively tight 24% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
D
Colour
IF
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 26
Dimensions5.43 × 3.62 × 2.49 mm
L/W Ratio1.50
Top View
5.43 mm3.62 mm0.40 ctD / IF
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 26
Side View
Table 69.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £2,399 GBP|Low: £831 GBP|High: £2,399 GBP|Avg: £1,182 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
September 29, 2026
Retailer 6£831 GBP
Retailer 3£850 GBP
Retailer 4£891 GBP
Retailer 2£925 GBP
Retailer 5£1,028 GBP
NZ Jewellers£2,399 GBP

3 data points across 6 retailers

7 retailers£831 GBP to £1,028 GBP

B+
Cheapest Retailer
-
£831 GBP
$1,113 USD
B+
Retailer 2
-
£850 GBP
$1,139 USD
View
B+
Retailer 3
-
£891 GBP
$1,194 USD
View
B+
Retailer 4
-
£925 GBP
$1,240 USD
View
B+
Retailer 5
-
£1,015 GBP
View
B+
Retailer 6
-
£1,028 GBP
$1,378 USD
View
Most Expensive
NZ Jewellers
21393438-8130-4c40-b008-27b7eb025d8f · Oct 30
£2,399 GBP
$3,215 USD
View
Price under review
6 more retailers have this diamond
Prices start from £831 GBPSave up to £198 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+
0.40ct Radiant
£831 GBP