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Marquise|Natural|GIA

0.41ct I SI2 Marquise Natural Diamond

GD • I/SI2 • GIA 1236370409

Certificate GIA 1236370409

Diamond specifications and retailer prices

From £354 GBP
As of November 2, 2026
Save £259 GBP (42%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £613 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 0.41ct natural marquise diamond

This 0.41ct natural marquise sits in the sub-half-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1236370409. Listed at 5 retailers as of November 1, 2026, with prices from £354 to £613, a £259 spread on the same certified stone. MOH London lists it at £613. 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

0.41
Carat
I
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1236370409
Dimensions6.49 × 4.07 × 2.58 mm
L/W Ratio1.59
Culet sizeNone
Top View
6.49 mm4.07 mm0.41 ctI / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 1236370409
Side View
Table 63.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 63.5%

Caratlytics Score

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

Price History

Last verified: Nov 2
Current: £613 GBP|Low: £280 GBP|High: £736 GBP|Avg: £463 GBP|-15.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 4£280 GBP
Retailer 2£354 GBP
Retailer 5£414 GBP
Retailer 3£499 GBP
MOH London£613 GBP

39 data points across 5 retailers

5 retailers£354 GBP to £613 GBP

Retailer 1
-
£280 GBP
$375 USD
Price last confirmed 12 days ago
B
Retailer 2
-
£354 GBP
View
B
Retailer 3
-
£414 GBP
$555 USD
View
C
Retailer 4
-
£499 GBP
€637 EUR
View
Most Expensive
C
MOH London
594C9288F · Nov 1
£613 GBP
View
4 more retailers have this diamond
Prices start from £354 GBPSave up to £259 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
0.41ct Marquise
£354 GBP