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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 $492 NZD
$277 USD
As of October 29, 2026
Save $652 NZD (57%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,144 NZD 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 $492 to $1,144, a $652 spread on the same certified stone. MOH London lists it at $1,144. 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
Colour
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: $1,144 NZD|Low: $492 NZD|High: $2,234 NZD|Avg: $931 NZD|-0.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 6$492 NZD
Retailer 5$551 NZD
Retailer 7$686 NZD
Retailer 8$768 NZD
Retailer 2$857 NZD
Retailer 3$1,001 NZD
MOH London$1,144 NZD
Retailer 4$2,234 NZD

25 data points across 8 retailers

8 retailers$492 NZD to $1,144 NZD

B+
Cheapest Retailer
-
$492 NZD
$277 USD
B+
Retailer 2
-
$551 NZD
$310 USD
View
B
Retailer 3
-
$686 NZD
$386 USD
View
B
Retailer 4
-
$768 NZD
$432 USD
View
B
Retailer 5
-
$857 NZD
€459 EUR
View
B
Retailer 6
-
$1,001 NZD
£444 GBP
View
Most Expensive
C
MOH London
5D5B9DDD1 · Oct 29
$1,144 NZD
£507 GBP
View
6 more retailers have this diamond
Prices start from $492 NZDSave up to $652 NZD

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
$492 NZD