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Marquise|Natural|GIA

0.40ct E SI2 Marquise Natural Diamond

ID • E/SI2 • GIA 7558335818

Certificate GIA 7558335818

Diamond specifications and retailer prices

From £407 GBP
As of November 5, 2026
Save £256 GBP (39%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £1,036 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 0.4ct natural marquise diamond

This 0.4ct natural marquise sits in the sub-half-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7558335818. Listed at 20 retailers as of November 2, 2026, with a 63% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
E
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7558335818
Dimensions7.93 × 3.65 × 2.28 mm
L/W Ratio2.17
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather
Top View
7.93 mm3.65 mm0.40 ctE / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7558335818
Side View
Table 56.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 62.5%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: £1,036 GBP|Low: £379 GBP|High: £1,409 GBP|Avg: £627 GBP|-0.2%
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
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Retailer 18
Retailer 19
November 6, 2026
Retailer 14£379 GBP
Retailer 19£407 GBP
Retailer 7£438 GBP
Retailer 16£438 GBP
Retailer 18£458 GBP
Retailer 3£470 GBP
Retailer 15£477 GBP
Retailer 17£481 GBP
Retailer 10£520 GBP
Retailer 11£520 GBP
Retailer 8£534 GBP
Retailer 9£535 GBP
Retailer 2£546 GBP
Retailer 6£566 GBP
Retailer 13£615 GBP
Retailer 12£663 GBP
MOH London£1,036 GBP
Retailer 5£1,283 GBP
Retailer 4£1,409 GBP

43 data points across 19 retailers

20 retailers£407 GBP to £663 GBP

Retailer 1
-
£379 GBP
Price last confirmed 16 days ago
B+
Retailer 2
-
£407 GBP
View
B+
Retailer 3
-
£415 GBP
View
B+
Retailer 4
-
£438 GBP
View
Retailer 5
-
£438 GBP
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£458 GBP
View
B
Retailer 7
-
£470 GBP
View
B
Retailer 8
-
£477 GBP
View
B
Retailer 9
-
£481 GBP
View
B
Retailer 10
-
£520 GBP
View
B
Retailer 11
-
£520 GBP
View
B
Retailer 12
-
£534 GBP
View
B
Retailer 13
-
£535 GBP
View
B
Retailer 14
-
£546 GBP
View
B
Retailer 15
-
£566 GBP
View
Retailer 16
-
£615 GBP
View
Price last confirmed 7 days ago
B
Retailer 17
-
£663 GBP
View
Most Expensive
MOH London
E250BE6CB · Nov 4
£1,036 GBP
View
Price under review
17 more retailers have this diamond
Prices start from £407 GBPSave up to £256 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 Marquise
£407 GBP