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Marquise|Natural|GIA

0.40ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 1549594390

Certificate GIA 1549594390

Diamond specifications and retailer prices

From £253 GBP
₹32,372 INR
As of November 2, 2026
Save £554 GBP (69%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £807 GBP at MOH London · As of November 2, 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 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 1549594390. Listed at 20 retailers as of November 2, 2026, with prices from £253 to £807, a £554 spread on the same certified stone. MOH London lists it at £807. 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
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1549594390
Dimensions8.10 × 3.63 × 2.24 mm
L/W Ratio2.23
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Twinning Wisp, Crystal
Top View
8.10 mm3.63 mm0.40 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryGood
FluorescenceFaint
CertificateGIA 1549594390
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 61.8%

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 2
Current: £807 GBP|Low: £253 GBP|High: £876 GBP|Avg: £477 GBP|-7.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 2£253 GBP
Retailer 10£296 GBP
Retailer 12£365 GBP
Retailer 9£402 GBP
Retailer 3£403 GBP
Retailer 6£436 GBP
Retailer 11£447 GBP
Retailer 8£479 GBP
Retailer 5£527 GBP
Retailer 7£542 GBP
Retailer 4£564 GBP
MOH London£807 GBP

32 data points across 12 retailers

20 retailers£253 GBP to £807 GBP

A
Cheapest Retailer
-
£253 GBP
₹32,372 INR
A
Retailer 2
-
£296 GBP
HK$3,100 HKD
View
B+
Retailer 3
-
£365 GBP
SGD 662 SGD
View
Retailer 4
-
£369 GBP
$495 USD
View
Price last confirmed 38 days ago
Retailer 5
-
£375 GBP
$503 USD
View
Price last confirmed 25 days ago
Retailer 6
-
£397 GBP
$533 USD
View
Price last confirmed 32 days ago
B+
Retailer 7
-
£402 GBP
$540 USD
View
B+
Retailer 8
-
£403 GBP
$541 USD
View
Retailer 9
-
£404 GBP
$542 USD
View
Price last confirmed 25 days ago
Retailer 10
-
£426 GBP
$571 USD
View
Price last confirmed 39 days ago
Retailer 11
-
£433 GBP
$581 USD
View
Price last confirmed 31 days ago
B
Retailer 12
-
£436 GBP
View
B+
Retailer 13
-
£447 GBP
$600 USD
View
B
Retailer 14
-
£479 GBP
View
B
Retailer 15
-
£527 GBP
€674 EUR
View
B
Retailer 16
-
£542 GBP
ZAR 11,755 ZAR
View
Retailer 17
-
£564 GBP
A$1,164 AUD
View
Price last confirmed 29 days ago
Most Expensive
B
MOH London
8650FE27F · Nov 2
£807 GBP
View
17 more retailers have this diamond
Prices start from £253 GBPSave up to £554 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
£253 GBP