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Radiant|Natural|GIA

0.40ct G SI1 Radiant Natural Diamond

EX • G/SI1 • GIA 6552226389

Certificate GIA 6552226389

Diamond specifications and retailer prices

From £295 GBP
$395 USD
As of October 28, 2026
Save £510 GBP (63%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £805 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 0.4ct natural radiant diamond

This 0.4ct natural radiant sits in the sub-half-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6552226389. Listed at 15 retailers as of October 28, 2026, with prices from £295 to £805, a £510 spread on the same certified stone. MOH London lists it at £805. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.40
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.2°
Pavilion angle51.3°
OriginNatural
Grading LabGIA
CertificateGIA 6552226389
Dimensions5.37 × 3.73 × 2.40 mm
L/W Ratio1.44
Top View
5.37 mm3.73 mm0.40 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552226389
Side View
Table 65.0%Crown 35.2°Girdle: MED-STKPavilion 51.3°Culet: NoneDepth 64.5%

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: Oct 28
Current: £805 GBP|Low: £295 GBP|High: £843 GBP|Avg: £460 GBP|-3.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 2, 2026
Retailer 11£295 GBP
Retailer 6£325 GBP
Retailer 10£363 GBP
Retailer 15£373 GBP
Retailer 9£392 GBP
Retailer 4£397 GBP
Retailer 3£403 GBP
Retailer 12£403 GBP
Retailer 13£410 GBP
Retailer 8£434 GBP
Retailer 14£477 GBP
Retailer 2£498 GBP
Retailer 5£521 GBP
Retailer 7£577 GBP
MOH London£805 GBP

42 data points across 15 retailers

15 retailers£295 GBP to £805 GBP

A
Cheapest Retailer
-
£295 GBP
$395 USD
A
Retailer 2
-
£325 GBP
HK$3,400 HKD
View
A
Retailer 3
-
£363 GBP
$487 USD
View
A
Retailer 4
-
£373 GBP
$500 USD
View
A
Retailer 5
-
£392 GBP
$525 USD
View
B+
Retailer 6
-
£397 GBP
$532 USD
View
B+
Retailer 7
-
£403 GBP
$540 USD
View
B+
Retailer 8
-
£403 GBP
$540 USD
View
B+
Retailer 9
-
£410 GBP
$550 USD
View
B+
Retailer 10
-
£434 GBP
View
B+
Retailer 11
-
£477 GBP
View
B
Retailer 12
-
£498 GBP
€635 EUR
View
B+
Retailer 13
-
£521 GBP
$699 USD
View
Retailer 14
-
£577 GBP
A$1,190 AUD
View
Price last confirmed 29 days ago
Most Expensive
B
MOH London
A44B12A18 · Nov 1
£805 GBP
View
14 more retailers have this diamond
Prices start from £295 GBPSave up to £510 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
£295 GBP