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Marquise|Natural|IGI

0.31ct I SI1 Marquise Natural Diamond

VG • I/SI1 • IGI 839657974

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 839657974

Diamond specifications and retailer prices

From €247 EUR
$277 USD
As of October 29, 2026
Save €327 EUR (57%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: €574 EUR 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 839657974. Listed at 8 retailers as of October 29, 2026, with prices from €247 to €574, a €327 spread on the same certified stone. MOH London lists it at €574. 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 angle30.6°
Pavilion angle40.3°
OriginNatural
Grading LabIGI
CertificateIGI 839657974
Dimensions7.39 × 3.33 × 2.17 mm
L/W Ratio2.22
Girdle conditionFaceted
Top View
7.39 mm3.33 mm0.31 ctI / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI 839657974
Side View
Table 52.0%Crown 30.6°Girdle: STK-THKPavilion 40.3°Culet: NoneDepth 65.2%

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: €574 EUR|Low: €247 EUR|High: €1,121 EUR|Avg: €491 EUR|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 4€247 EUR
Retailer 8€276 EUR
Retailer 5€344 EUR
Retailer 7€385 EUR
Retailer 2€430 EUR
Retailer 3€502 EUR
MOH London€574 EUR
Retailer 6€1,121 EUR

13 data points across 8 retailers

8 retailers€247 EUR to €574 EUR

B+
Cheapest Retailer
-
€247 EUR
$277 USD
B+
Retailer 2
-
€276 EUR
$310 USD
View
B
Retailer 3
-
€344 EUR
$386 USD
View
B
Retailer 4
-
€385 EUR
$432 USD
View
B
Retailer 5
-
€430 EUR
View
C
Retailer 6
-
€502 EUR
£444 GBP
View
Most Expensive
C
MOH London
9C1C28148 · Oct 29
€574 EUR
£507 GBP
View
6 more retailers have this diamond
Prices start from €247 EURSave up to €327 EUR

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
€247 EUR