Marquise|Natural|IGI

0.40ct I SI1 Marquise Natural Diamond

VG • I/SI1 • IGI 815673826

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 815673826

Diamond specifications and retailer prices

From $286 USD
₹27,254 INR
As of November 1, 2026
Save $619 USD (68%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $906 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 815673826. Listed at 14 retailers as of November 1, 2026, with prices from $286 to $906, a $619 spread on the same certified stone. MOH London lists it at $906. 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
I
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle33.6°
Pavilion angle39.1°
OriginNatural
Grading LabIGI
CertificateIGI 815673826
Dimensions7.38 × 4.08 × 2.30 mm
L/W Ratio1.81
Girdle conditionFaceted
Top View
7.38 mm4.08 mm0.40 ctI / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI 815673826
Side View
Table 65.0%Crown 33.6°Girdle: MED-THKPavilion 39.1°Culet: NoneDepth 56.4%

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: $906 USD|Low: $286 USD|High: $1,502 USD|Avg: $616 USD|-4.6%
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
November 2, 2026
Retailer 8$286 USD
Retailer 13$392 USD
Retailer 11$422 USD
Retailer 12$422 USD
Retailer 9$450 USD
Retailer 14$452 USD
Retailer 5$523 USD
Retailer 7$530 USD
Retailer 4$559 USD
Retailer 10$608 USD
Retailer 2$649 USD
Retailer 6$803 USD
MOH London$906 USD
Retailer 3$1,502 USD

35 data points across 14 retailers

14 retailers$286 USD to $906 USD

A
Cheapest Retailer
-
$286 USD
₹27,254 INR
B+
Retailer 2
-
$392 USD
View
B+
Retailer 3
-
$422 USD
View
B+
Retailer 4
-
$422 USD
View
B
Retailer 5
-
$450 USD
View
B
Retailer 6
-
$452 USD
View
B
Retailer 7
-
$523 USD
View
B
Retailer 8
-
$530 USD
£418 GBP
View
B
Retailer 9
-
$559 USD
View
B
Retailer 10
-
$608 USD
ZAR 9,816 ZAR
View
B
Retailer 11
-
$649 USD
€618 EUR
View
Retailer 12
-
$803 USD
£632 GBP
View
Price last confirmed 33 days ago
Most Expensive
C
MOH London
DE12E4703 · Nov 1
$906 USD
£713 GBP
View
12 more retailers have this diamond
Prices start from $286 USDSave up to $619 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
$286 USD