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Marquise|Natural|IGI

0.31ct F SI1 Marquise Natural Diamond

VG • F/SI1 • IGI 839657754

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 839657754

Diamond specifications and retailer prices

From $315 USD
As of October 29, 2026
Save $418 USD (57%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $733 USD 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 F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 839657754. Listed at 8 retailers as of October 29, 2026, with prices from $315 to $733, a $418 spread on the same certified stone. MOH London lists it at $733. 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
F
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38.4°
Pavilion angle41.7°
OriginNatural
Grading LabIGI
CertificateIGI 839657754
Dimensions6.65 × 3.50 × 2.33 mm
L/W Ratio1.90
Girdle conditionFaceted
Top View
6.65 mm3.50 mm0.31 ctF / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI 839657754
Side View
Table 57.0%Crown 38.4°Girdle: MED-THKPavilion 41.7°Culet: NoneDepth 66.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $733 USD|Low: $315 USD|High: $1,209 USD|Avg: $595 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 4$315 USD
Retailer 8$352 USD
Retailer 5$447 USD
Retailer 7$464 USD
Retailer 2$542 USD
Retailer 3$640 USD
MOH London$733 USD
Retailer 6$1,209 USD

13 data points across 8 retailers

8 retailers$315 USD to $733 USD

A
Cheapest Retailer
-
$315 USD
B+
Retailer 2
-
$352 USD
View
B
Retailer 3
-
$447 USD
View
B
Retailer 4
-
$464 USD
View
B
Retailer 5
-
$542 USD
€516 EUR
View
B
Retailer 6
-
$640 USD
£504 GBP
View
Most Expensive
C
MOH London
E618F7612 · Oct 29
$733 USD
£577 GBP
View
6 more retailers have this diamond
Prices start from $315 USDSave up to $418 USD

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.

A
0.31ct Marquise
$315 USD