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Marquise|Natural|GIA

0.40ct H SI2 Marquise Natural Diamond

ID • H/SI2 • GIA 7553247431

Certificate GIA 7553247431

Diamond specifications and retailer prices

From £365 GBP
$489 USD
As of November 1, 2026
6 retailers carry this diamond
Most expensive: £448 GBP at Diamond Heaven · As of September 26, 2026
View at Diamond Heaven

About this 0.4ct natural marquise diamond

This 0.4ct natural marquise sits in the sub-half-carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7553247431. Listed at 6 retailers as of November 1, 2026. 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
H
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7553247431
Dimensions8.53 × 3.73 × 2.18 mm
L/W Ratio2.29
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Twinning Wisp
Top View
8.53 mm3.73 mm0.40 ctH / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7553247431
Side View
Table 56.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 58.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £448 GBP|Low: £210 GBP|High: £1,215 GBP|Avg: £435 GBP
Diamond Heaven
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
Retailer 16
September 30, 2026
Retailer 9£211 GBP
Retailer 13£231 GBP
Retailer 16£243 GBP
Retailer 6£317 GBP
Retailer 7£326 GBP
Retailer 14£328 GBP
Retailer 5£329 GBP
Retailer 15£341 GBP
Retailer 4£366 GBP
Retailer 10£375 GBP
Retailer 2£389 GBP
Retailer 8£415 GBP
Diamond Heaven£448 GBP
Retailer 12£473 GBP
Retailer 11£741 GBP
Retailer 3£1,215 GBP

11 data points across 16 retailers

6 retailers

Retailer 1
-
£231 GBP
$310 USD
Price last confirmed 33 days ago
Retailer 2
-
£317 GBP
$425 USD
View
Price last confirmed 34 days ago
B
Retailer 3
-
£365 GBP
$489 USD
View
Retailer 4
-
£366 GBP
$490 USD
View
Price last confirmed 34 days ago
Most Expensive
Diamond Heaven
0.4SI2H7531EC07N · Sep 26
£448 GBP
View
Price last confirmed 36 days ago
4 more retailers have this diamond
Prices start from £365 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
£365 GBP