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 $268 USD
₹25,551 INR
As of October 31, 2026
Save $583 USD (68%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $851 USD 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 October 31, 2026, with prices from $268 to $851, a $583 spread on the same certified stone. MOH London lists it at $851. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $851 USD|Low: $268 USD|High: $861 USD|Avg: $537 USD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 2$268 USD
Retailer 5$397 USD
Retailer 4$505 USD
Retailer 6$537 USD
Retailer 3$611 USD
MOH London$851 USD

42 data points across 6 retailers

7 retailers$268 USD to $851 USD

A
Cheapest Retailer
-
$268 USD
₹25,551 INR
B+
Retailer 2
-
$397 USD
View
B
Retailer 3
-
$499 USD
View
B
Retailer 4
-
$505 USD
£397 GBP
View
B
Retailer 5
-
$537 USD
View
B
Retailer 6
-
$611 USD
€582 EUR
View
Most Expensive
C
MOH London
9F6294FE7 · Nov 1
$851 USD
£670 GBP
View
6 more retailers have this diamond
Prices start from $268 USDSave up to $583 USD

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
$268 USD