CaratHunter
Plans
Marquise|Natural|IGI

0.31ct I SI1 Marquise Natural Diamond

VG • I/SI1 • IGI 839656774

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 839656774

Diamond specifications and retailer prices

From $342 CAD
$245 USD
As of October 29, 2026
Save $451 CAD (57%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $793 CAD at MOH London · As of October 29, 2026
View at MOH London

About this 0.31ct natural marquise diamond

This 0.31ct 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 839656774. Listed at 8 retailers as of October 29, 2026, with prices from $342 to $793, a $451 spread on the same certified stone. MOH London lists it at $793. 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

0.31
Carat
I
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle30.4°
Pavilion angle39.1°
OriginNatural
Grading LabIGI
CertificateIGI 839656774
Dimensions7.18 × 3.53 × 2.03 mm
L/W Ratio2.03
Girdle conditionFaceted
Top View
7.18 mm3.53 mm0.31 ctI / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI 839656774
Side View
Table 65.0%Crown 30.4°Girdle: MED-THKPavilion 39.1°Culet: NoneDepth 57.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $793 CAD|Low: $342 CAD|High: $1,548 CAD|Avg: $668 CAD|+0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 4$342 CAD
Retailer 8$381 CAD
Retailer 5$471 CAD
Retailer 7$563 CAD
Retailer 2$604 CAD
Retailer 3$694 CAD
MOH London$793 CAD
Retailer 6$1,548 CAD

12 data points across 8 retailers

8 retailers$342 CAD to $793 CAD

B+
Cheapest Retailer
-
$342 CAD
$245 USD
B+
Retailer 2
-
$381 CAD
$273 USD
View
B
Retailer 3
-
$471 CAD
$337 USD
View
B
Retailer 4
-
$563 CAD
$403 USD
View
B
Retailer 5
-
$604 CAD
€412 EUR
View
B
Retailer 6
-
$694 CAD
£391 GBP
View
Most Expensive
C
MOH London
5A3CC6575 · Oct 29
$793 CAD
£447 GBP
View
6 more retailers have this diamond
Prices start from $342 CADSave up to $451 CAD

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+
0.31ct Marquise
$342 CAD