CaratHunter
Plans
Marquise|Natural|IGI

0.31ct I SI1 Marquise Natural Diamond

VG • I/SI1 • IGI 839660312

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 839660312

Diamond specifications and retailer prices

From $387 CAD
$277 USD
As of October 29, 2026
Save $513 CAD (57%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $899 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 839660312. Listed at 8 retailers as of October 29, 2026, with prices from $387 to $899, a $513 spread on the same certified stone. MOH London lists it at $899. 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
SymmetryVery Good
FluorescenceNone
Crown angle37.1°
Pavilion angle37.9°
OriginNatural
Grading LabIGI
CertificateIGI 839660312
Dimensions7.18 × 3.46 × 2.18 mm
L/W Ratio2.08
Girdle conditionFaceted
Top View
7.18 mm3.46 mm0.31 ctI / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI 839660312
Side View
Table 54.0%Crown 37.1°Girdle: STK-THKPavilion 37.9°Culet: NoneDepth 63.0%

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: $899 CAD|Low: $387 CAD|High: $1,756 CAD|Avg: $732 CAD|-0.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 6$387 CAD
Retailer 5$433 CAD
Retailer 7$539 CAD
Retailer 8$603 CAD
Retailer 2$673 CAD
Retailer 3$787 CAD
MOH London$899 CAD
Retailer 4$1,756 CAD

25 data points across 8 retailers

8 retailers$387 CAD to $899 CAD

B+
Cheapest Retailer
-
$387 CAD
$277 USD
B+
Retailer 2
-
$433 CAD
$310 USD
View
B
Retailer 3
-
$539 CAD
$386 USD
View
B
Retailer 4
-
$603 CAD
$432 USD
View
B
Retailer 5
-
$673 CAD
€459 EUR
View
B
Retailer 6
-
$787 CAD
£444 GBP
View
Most Expensive
C
MOH London
5D5B9DDD1 · Oct 29
$899 CAD
£507 GBP
View
6 more retailers have this diamond
Prices start from $387 CADSave up to $513 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
$387 CAD