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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 $2,044 USD
As of November 1, 2026
Save $3,346 USD (62%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,390 USD 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 $2,044 to $5,390, a $3,346 spread on the same certified stone. NZ Jewellers lists it at $5,390. 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
Color
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

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 1
Current: $5,390 USD|Low: $2,039 USD|High: $5,390 USD|Avg: $2,902 USD
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$2,044 USD
Retailer 9$2,309 USD
Retailer 8$2,465 USD
Retailer 4$2,578 USD
Retailer 7$2,578 USD
Retailer 6$2,697 USD
Retailer 10$2,718 USD
Retailer 3$2,831 USD
Retailer 5$2,975 USD
NZ Jewellers$5,390 USD

39 data points across 10 retailers

11 retailers$2,044 USD to $5,390 USD

A
Cheapest Retailer
-
$2,044 USD
A
Retailer 2
-
$2,309 USD
View
Retailer 3
-
$2,430 USD
View
Price last confirmed 95 days ago
A
Retailer 4
-
$2,465 USD
View
Retailer 5
-
$2,578 USD
View
Price last confirmed 8 days ago
Retailer 6
-
$2,578 USD
View
Price last confirmed 8 days ago
Retailer 7
-
$2,697 USD
View
Price last confirmed 8 days ago
Retailer 8
-
$2,718 USD
View
Price last confirmed 7 days ago
Retailer 9
-
$2,831 USD
View
Price last confirmed 7 days ago
B+
Retailer 10
-
$2,975 USD
View
Most Expensive
B+
NZ Jewellers
d5a24acb-c285-4990-b854-2bdc79cccdca · Oct 30
$5,390 USD
View
10 more retailers have this diamond
Prices start from $2,044 USDSave up to $3,346 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
2.51ct Round
$2,044 USD