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Marquise|Natural|IGI

2.51ct I SI2 Marquise Natural Diamond

VG • I/SI2 • IGI 765635213

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 765635213

Diamond specifications and retailer prices

From $17,582 AUD
₹1,173,532 INR
As of November 2, 2026
Save $10,946 AUD (38%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $28,529 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 2.51ct natural marquise diamond

This 2.51ct natural marquise sits in the two to three carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 765635213. Listed at 12 retailers as of November 1, 2026, with prices from $17,582 to $28,529, a $10,946 spread on the same certified stone. MOH London lists it at $28,529. 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

2.51
Carat
I
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.6°
Pavilion angle37.7°
OriginNatural
Grading LabIGI
CertificateIGI 765635213
Dimensions13.51 × 7.21 × 4.23 mm
L/W Ratio1.87
Girdle conditionFaceted
Culet sizePointed
Top View
13.51 mm7.21 mm2.51 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 765635213
Side View
Table 55.0%Crown 32.6°Girdle: THK-VTKPavilion 37.7°Culet: NoneDepth 58.7%

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: Nov 2
Current: $28,529 AUD|Low: $17,547 AUD|High: $31,465 AUD|Avg: $22,474 AUD|-9.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 2$17,582 AUD
Retailer 11$18,000 AUD
Retailer 3$18,720 AUD
Retailer 4$19,322 AUD
Retailer 12$20,791 AUD
Retailer 5$21,307 AUD
Retailer 9$21,508 AUD
Retailer 10$21,844 AUD
Retailer 7$22,683 AUD
Retailer 6$23,010 AUD
Retailer 8$25,878 AUD
MOH London$28,529 AUD

41 data points across 12 retailers

12 retailers$17,582 AUD to $28,529 AUD

A
Cheapest Retailer
-
$17,582 AUD
₹1,173,532 INR
A
Retailer 2
-
$18,000 AUD
$12,615 USD
View
A
Retailer 3
-
$18,720 AUD
$13,119 USD
View
A
Retailer 4
-
$19,322 AUD
$13,541 USD
View
Final sale: no returns
B+
Retailer 5
-
$20,791 AUD
$14,571 USD
View
A
Retailer 6
-
$21,307 AUD
£11,758 GBP
View
B+
Retailer 7
-
$21,508 AUD
$15,073 USD
View
B+
Retailer 8
-
$21,844 AUD
$15,309 USD
View
B+
Retailer 9
-
$22,683 AUD
$15,897 USD
View
A
Retailer 10
-
$23,010 AUD
€15,358 EUR
View
B+
Retailer 11
-
$25,878 AUD
$18,136 USD
View
Most Expensive
B+
MOH London
4A2A77C0B · Nov 1
$28,529 AUD
£15,743 GBP
View
11 more retailers have this diamond
Prices start from $17,582 AUDSave up to $10,946 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
2.51ct Marquise
$17,582 AUD