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Round|Natural|IGI

2.51ct M SI2 Round Natural Diamond

EX • M/SI2 • IGI 743512805

Shape and cutting style on the report: Round brilliant

Certificate IGI 743512805

Diamond specifications and retailer prices

From $3,636 NZD
As of November 1, 2026
Save $5,952 NZD (62%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $9,588 NZD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded M colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 743512805. Listed at 11 retailers as of October 30, 2026, with prices from $3,636 to $9,588, a $5,952 spread on the same certified stone. NZ Jewellers lists it at $9,588. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

2.51
Carat
M
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle40.9°
OriginNatural
Grading LabIGI
CertificateIGI 743512805
Dimensions8.54 × 8.60 × 5.44 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
8.54 mm8.60 mm2.51 ctM / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 743512805
Side View
Table 57.0%Crown 36.3°Girdle: Slightly ThickPavilion 40.9°Culet: NoneDepth 63.4%

Caratlytics Score

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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 1
Current: $9,588 NZD|Low: $3,627 NZD|High: $9,588 NZD|Avg: $5,163 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 2$3,636 NZD
Retailer 9$4,107 NZD
Retailer 8$4,385 NZD
Retailer 4$4,586 NZD
Retailer 7$4,586 NZD
Retailer 6$4,798 NZD
Retailer 10$4,835 NZD
Retailer 3$5,036 NZD
Retailer 5$5,292 NZD
NZ Jewellers$9,588 NZD

39 data points across 10 retailers

11 retailers$3,636 NZD to $9,588 NZD

A
Cheapest Retailer
-
$3,636 NZD
A
Retailer 2
-
$4,107 NZD
View
Retailer 3
-
$4,323 NZD
View
Price last confirmed 95 days ago
A
Retailer 4
-
$4,385 NZD
View
Retailer 5
-
$4,586 NZD
View
Price last confirmed 8 days ago
Retailer 6
-
$4,586 NZD
View
Price last confirmed 8 days ago
Retailer 7
-
$4,798 NZD
View
Price last confirmed 8 days ago
Retailer 8
-
$4,835 NZD
View
Price last confirmed 7 days ago
Retailer 9
-
$5,036 NZD
View
Price last confirmed 7 days ago
B+
Retailer 10
-
$5,292 NZD
View
Most Expensive
B+
NZ Jewellers
d5a24acb-c285-4990-b854-2bdc79cccdca · Oct 30
$9,588 NZD
$5,390 USD
View
10 more retailers have this diamond
Prices start from $3,636 NZDSave up to $5,952 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 Round
$3,636 NZD