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Marquise|Natural|GIA

0.40ct G SI1 Marquise Natural Diamond

VG • G/SI1 • GIA 2504663620

Certificate GIA 2504663620

Diamond specifications and retailer prices

From £248 GBP
₹31,707 INR
As of November 2, 2026
Save £549 GBP (69%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £797 GBP at MOH London · As of October 29, 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 2504663620. Listed at 18 retailers as of October 29, 2026, with prices from £248 to £797, a £549 spread on the same certified stone. MOH London lists it at £797. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.40
Carat
G
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2504663620
Dimensions7.04 × 3.89 × 2.59 mm
L/W Ratio1.81
Top View
7.04 mm3.89 mm0.40 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2504663620
Side View
Table 56.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 66.5%

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: £797 GBP|Low: £248 GBP|High: £1,316 GBP|Avg: £538 GBP|-0.5%
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
November 2, 2026
Retailer 6£248 GBP
Retailer 11£344 GBP
Retailer 10£347 GBP
Retailer 2£370 GBP
Retailer 5£370 GBP
Retailer 12£396 GBP
Retailer 9£428 GBP
Retailer 4£471 GBP
Retailer 8£519 GBP
Retailer 3£532 GBP
Retailer 7£695 GBP
MOH London£797 GBP
Retailer 13£1,316 GBP

28 data points across 13 retailers

18 retailers£248 GBP to £797 GBP

A
Cheapest Retailer
-
£248 GBP
₹31,707 INR
B+
Retailer 2
-
£344 GBP
$461 USD
View
B+
Retailer 3
-
£347 GBP
$465 USD
View
B+
Retailer 4
-
£370 GBP
$496 USD
View
B+
Retailer 5
-
£370 GBP
$496 USD
View
B
Retailer 6
-
£395 GBP
$530 USD
View
B
Retailer 7
-
£396 GBP
$532 USD
View
B
Retailer 8
-
£396 GBP
$532 USD
View
B
Retailer 9
-
£428 GBP
View
B
Retailer 10
-
£439 GBP
$589 USD
View
B
Retailer 11
-
£441 GBP
$592 USD
View
B
Retailer 12
-
£471 GBP
View
B
Retailer 13
-
£519 GBP
€663 EUR
View
B
Retailer 14
-
£532 GBP
ZAR 11,542 ZAR
View
Retailer 15
-
£550 GBP
A$1,136 AUD
View
Price last confirmed 28 days ago
B
Retailer 16
-
£695 GBP
View
Most Expensive
B
MOH London
A4E4C7D57 · Oct 29
£797 GBP
View
16 more retailers have this diamond
Prices start from £248 GBPSave up to £549 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
£248 GBP