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Marquise|Natural|GIA

0.40ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 1568230929

Certificate GIA 1568230929

Diamond specifications and retailer prices

From £255 GBP
₹32,477 INR
As of November 1, 2026
Save £527 GBP (67%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £782 GBP at MOH London · As of November 1, 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 I 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 1568230929. Listed at 19 retailers as of November 1, 2026, with prices from £255 to £782, a £527 spread on the same certified stone. MOH London lists it at £782. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryGood
FluorescenceFaint
Crown angle37.4°
Pavilion angle38°
OriginNatural
Grading LabGIA
CertificateGIA 1568230929
Dimensions7.28 × 3.86 × 2.39 mm
L/W Ratio1.89
Girdle conditionFaceted
Culet sizeNone
Top View
7.28 mm3.86 mm0.40 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryGood
FluorescenceFaint
CertificateGIA 1568230929
Side View
Table 58.0%Crown 37.4°Girdle: STK-VTKPavilion 38°Culet: NoneDepth 61.9%

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 1
Current: £782 GBP|Low: £255 GBP|High: £1,349 GBP|Avg: £475 GBP|-1.8%
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
Retailer 16
Retailer 17
November 2, 2026
Retailer 10£255 GBP
Retailer 9£310 GBP
Retailer 17£313 GBP
Retailer 11£339 GBP
Retailer 3£358 GBP
Retailer 5£366 GBP
Retailer 8£366 GBP
Retailer 7£367 GBP
Retailer 13£391 GBP
Retailer 2£422 GBP
Retailer 14£431 GBP
Retailer 12£452 GBP
Retailer 6£493 GBP
Retailer 4£513 GBP
Retailer 16£525 GBP
MOH London£782 GBP
Retailer 15£1,299 GBP

23 data points across 17 retailers

19 retailers£255 GBP to £782 GBP

A
Cheapest Retailer
-
£255 GBP
₹32,477 INR
B+
Retailer 2
-
£296 GBP
HK$3,100 HKD
View
B+
Retailer 3
-
£310 GBP
$415 USD
View
B+
Retailer 4
-
£313 GBP
$419 USD
View
Final sale: no returns
B+
Retailer 5
-
£339 GBP
$454 USD
View
B+
Retailer 6
-
£358 GBP
$480 USD
View
B+
Retailer 7
-
£366 GBP
$490 USD
View
B
Retailer 8
-
£366 GBP
$490 USD
View
Retailer 9
-
£367 GBP
SGD 664 SGD
View
Price last confirmed 7 days ago
B
Retailer 10
-
£391 GBP
$524 USD
View
B
Retailer 11
-
£422 GBP
View
B
Retailer 12
-
£431 GBP
$578 USD
View
B
Retailer 13
-
£452 GBP
$605 USD
View
B
Retailer 14
-
£493 GBP
$660 USD
View
B
Retailer 15
-
£513 GBP
€654 EUR
View
B
Retailer 16
-
£525 GBP
ZAR 11,370 ZAR
View
Retailer 17
-
£567 GBP
A$1,169 AUD
View
Price last confirmed 29 days ago
Most Expensive
B
MOH London
AB0C091A3 · Nov 1
£782 GBP
View
17 more retailers have this diamond
Prices start from £255 GBPSave up to £527 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
£255 GBP