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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 $313 SGD
$245 USD
As of October 29, 2026
Save $413 SGD (57%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $726 SGD 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 $313 to $726, a $413 spread on the same certified stone. MOH London lists it at $726. 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
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: $726 SGD|Low: $313 SGD|High: $1,416 SGD|Avg: $612 SGD|+0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 4$313 SGD
Retailer 8$349 SGD
Retailer 5$431 SGD
Retailer 7$515 SGD
Retailer 2$554 SGD
Retailer 3$635 SGD
MOH London$726 SGD
Retailer 6$1,416 SGD

13 data points across 8 retailers

8 retailers$313 SGD to $726 SGD

B+
Cheapest Retailer
-
$313 SGD
$245 USD
B+
Retailer 2
-
$349 SGD
$273 USD
View
B
Retailer 3
-
$431 SGD
$337 USD
View
B
Retailer 4
-
$515 SGD
$403 USD
View
B
Retailer 5
-
$554 SGD
€413 EUR
View
B
Retailer 6
-
$635 SGD
£391 GBP
View
Most Expensive
C
MOH London
5A3CC6575 · Oct 29
$726 SGD
£447 GBP
View
6 more retailers have this diamond
Prices start from $313 SGDSave up to $413 SGD

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
$313 SGD