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Marquise|Natural|GIA

0.40ct E SI2 Marquise Natural Diamond

EX • E/SI2 • GIA 6512068078

Certificate GIA 6512068078

Diamond specifications and retailer prices

From £264 GBP
As of November 6, 2026
Save £584 GBP (69%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £847 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 6512068078. Listed at 15 retailers as of November 4, 2026, with prices from £264 to £847, a £584 spread on the same certified stone. MOH London lists it at £847. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6512068078
Dimensions6.68 × 3.65 × 2.71 mm
L/W Ratio1.83
Top View
6.68 mm3.65 mm0.40 ctE / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6512068078
Side View
Table 60.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 74.4%

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: £847 GBP|Low: £264 GBP|High: £1,409 GBP|Avg: £542 GBP|-1.1%
MOH London
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£264 GBP
Retailer 8£368 GBP
Retailer 3£371 GBP
Retailer 5£383 GBP
Retailer 7£396 GBP
Retailer 9£424 GBP
Retailer 6£495 GBP
Retailer 11£503 GBP
Retailer 4£739 GBP
MOH London£847 GBP
Retailer 10£1,409 GBP

37 data points across 11 retailers

15 retailers£264 GBP to £847 GBP

A
Cheapest Retailer
-
£264 GBP
A
Retailer 2
-
£314 GBP
View
B+
Retailer 3
-
£368 GBP
View
Retailer 4
-
£371 GBP
View
Price last confirmed 16 days ago
B+
Retailer 5
-
£383 GBP
View
B+
Retailer 6
-
£396 GBP
View
Retailer 7
-
£396 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£424 GBP
View
B
Retailer 9
-
£459 GBP
View
B
Retailer 10
-
£464 GBP
View
B
Retailer 11
-
£495 GBP
View
B
Retailer 12
-
£503 GBP
View
B
Retailer 13
-
£739 GBP
View
Most Expensive
B
MOH London
CC5D96850 · Nov 4
£847 GBP
View
13 more retailers have this diamond
Prices start from £264 GBPSave up to £584 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 Marquise
£264 GBP