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Marquise|Natural|IGI

0.40ct H SI2 Marquise Natural Diamond

VG • H/SI2 • IGI 810631818

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 810631818

Diamond specifications and retailer prices

From £200 GBP
₹25,545 INR
As of November 1, 2026
Save £435 GBP (68%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £635 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 810631818. Listed at 7 retailers as of November 1, 2026, with prices from £200 to £635, a £435 spread on the same certified stone. MOH London lists it at £635. 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
H
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle35.3°
Pavilion angle38.2°
OriginNatural
Grading LabIGI
CertificateIGI 810631818
Dimensions7.83 × 3.89 × 2.18 mm
L/W Ratio2.01
Girdle conditionFaceted
Top View
7.83 mm3.89 mm0.40 ctH / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI 810631818
Side View
Table 64.0%Crown 35.3°Girdle: MED-THKPavilion 38.2°CuletDepth 56.0%

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: £635 GBP|Low: £200 GBP|High: £643 GBP|Avg: £402 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 2£200 GBP
Retailer 5£296 GBP
Retailer 4£377 GBP
Retailer 6£401 GBP
Retailer 3£456 GBP
MOH London£635 GBP

41 data points across 6 retailers

7 retailers£200 GBP to £635 GBP

A
Cheapest Retailer
-
£200 GBP
₹25,545 INR
B+
Retailer 2
-
£296 GBP
$397 USD
View
B
Retailer 3
-
£372 GBP
$499 USD
View
B
Retailer 4
-
£377 GBP
View
B
Retailer 5
-
£401 GBP
$537 USD
View
B
Retailer 6
-
£456 GBP
€582 EUR
View
Most Expensive
C
MOH London
9F6294FE7 · Nov 1
£635 GBP
View
6 more retailers have this diamond
Prices start from £200 GBPSave up to £435 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
£200 GBP