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Marquise|Natural|IGI

3.01ct I SI2 Marquise Natural Diamond

VG • I/SI2 • IGI 831651981

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 831651981

Diamond specifications and retailer prices

From $18,660 AUD
As of November 6, 2026
Save $10,811 AUD (37%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $29,470 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 3.01ct natural marquise diamond

This 3.01ct natural marquise sits in the three to five carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 831651981. Listed at 10 retailers as of November 4, 2026, with prices from $18,660 to $29,470, a $10,811 spread on the same certified stone. MOH London lists it at $29,470. 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

3.01
Carat
I
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle32.9°
Pavilion angle37.2°
OriginNatural
Grading LabIGI
CertificateIGI 831651981
Dimensions14.77 × 7.62 × 4.34 mm
L/W Ratio1.94
Girdle conditionFaceted
Culet sizeNone
Top View
14.77 mm7.62 mm3.01 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 831651981
Side View
Table 62.0%Crown 32.9°Girdle: THK-VTKPavilion 37.2°Culet: NoneDepth 57.0%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $29,470 AUD|Low: $18,660 AUD|High: $33,076 AUD|Avg: $23,379 AUD|-10.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 2$18,660 AUD
Retailer 9$19,390 AUD
Retailer 10$20,015 AUD
Retailer 7$22,278 AUD
Retailer 8$22,626 AUD
Retailer 3$23,145 AUD
Retailer 5$23,496 AUD
Retailer 4$23,706 AUD
Retailer 6$26,804 AUD
MOH London$29,470 AUD

37 data points across 10 retailers

10 retailers$18,660 AUD to $29,470 AUD

A
Cheapest Retailer
-
$18,660 AUD
A
Retailer 2
-
$19,390 AUD
View
A
Retailer 3
-
$20,015 AUD
View
Final sale: no returns
B+
Retailer 4
-
$22,278 AUD
View
B+
Retailer 5
-
$22,626 AUD
View
A
Retailer 6
-
$23,145 AUD
View
A
Retailer 7
-
$23,496 AUD
View
A
Retailer 8
-
$23,706 AUD
View
B+
Retailer 9
-
$26,804 AUD
View
Most Expensive
B+
MOH London
07C7837AF · Nov 4
$29,470 AUD
£15,944 GBP
View
9 more retailers have this diamond
Prices start from $18,660 AUDSave up to $10,811 AUD

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
3.01ct Marquise
$18,660 AUD