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Marquise|Natural|IGI

2.51ct I SI2 Marquise Natural Diamond

VG • I/SI2 • IGI 782658126

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 782658126

Diamond specifications and retailer prices

From $19,524 NZD
£8,650 GBP
As of November 2, 2026
Save $8,374 NZD (30%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $27,898 NZD at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

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 782658126. Listed at 6 retailers as of November 2, 2026, with prices from $19,524 to $27,898, a $8,374 spread on the same certified stone. NZ Jewellers lists it at $27,898. 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 angle41.4°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 782658126
Dimensions12.43 × 6.96 × 4.79 mm
L/W Ratio1.79
Girdle conditionFaceted
Culet sizePointed
Top View
12.43 mm6.96 mm2.51 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 782658126
Side View
Table 54.0%Crown 41.4°Girdle: THK-VTKPavilion 40.8°Culet: NoneDepth 68.8%

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: $27,898 NZD|Low: $17,240 NZD|High: $28,302 NZD|Avg: $21,452 NZD|-1.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 6$17,240 NZD
Retailer 7$17,579 NZD
Retailer 2$19,524 NZD
Retailer 4$20,016 NZD
Retailer 5$20,325 NZD
Retailer 3$26,143 NZD
NZ Jewellers$27,898 NZD

32 data points across 7 retailers

6 retailers$19,524 NZD to $27,898 NZD

Retailer 1
-
$17,240 NZD
$9,700 USD
Price last confirmed 17 days ago
A
Retailer 2
-
$19,524 NZD
£8,650 GBP
View
A
Retailer 3
-
$20,016 NZD
$11,262 USD
View
A
Retailer 4
-
$20,325 NZD
$11,436 USD
View
B+
Retailer 5
-
$26,143 NZD
£11,582 GBP
View
Most Expensive
B+
NZ Jewellers
b968ba44-c5ef-48bc-857d-46f9ad5f5d47 · Nov 3
$27,898 NZD
$15,697 USD
View
5 more retailers have this diamond
Prices start from $19,524 NZDSave up to $8,374 NZD

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
$19,524 NZD