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2.51ct H SI2 Round Natural Diamond

EX • H/SI2 • IGI 825619326

Shape and cutting style on the report: Round brilliant

Certificate IGI 825619326

Diamond specifications and retailer prices

From $9,963 USD
₹948,837 INR
As of October 30, 2026
Save $8,976 USD (47%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $18,939 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 825619326. Listed at 15 retailers as of October 30, 2026, with prices from $9,963 to $18,939, a $8,976 spread on the same certified stone. NZ Jewellers lists it at $18,939. 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
H
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle40.1°
OriginNatural
Grading LabIGI
CertificateIGI 825619326
Dimensions8.77 × 8.82 × 5.25 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
8.77 mm8.82 mm2.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 825619326
Side View
Table 57.0%Crown 32°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 59.6%

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: Oct 30
Current: $18,939 USD|Low: $9,903 USD|High: $18,939 USD|Avg: $13,590 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 30, 2026
Retailer 8$9,963 USD
Retailer 14$11,638 USD
Retailer 13$11,903 USD
Retailer 5$12,543 USD
Retailer 15$12,640 USD
Retailer 3$13,223 USD
Retailer 11$13,233 USD
Retailer 10$13,365 USD
Retailer 12$13,379 USD
Retailer 4$13,589 USD
Retailer 2$13,700 USD
Retailer 6$13,921 USD
Retailer 7$14,111 USD
Retailer 9$17,842 USD
NZ Jewellers$18,939 USD

45 data points across 15 retailers

15 retailers$9,963 USD to $18,939 USD

A
Cheapest Retailer
-
$9,963 USD
₹948,837 INR
A
Retailer 2
-
$11,638 USD
View
A
Retailer 3
-
$11,903 USD
View
A
Retailer 4
-
$12,543 USD
View
A
Retailer 5
-
$12,640 USD
View
A
Retailer 6
-
$13,223 USD
View
Retailer 7
-
$13,233 USD
£10,420 GBP
View
Price last confirmed 30 days ago
A
Retailer 8
-
$13,365 USD
View
A
Retailer 9
-
$13,379 USD
View
A
Retailer 10
-
$13,589 USD
View
A
Retailer 11
-
$13,700 USD
€13,048 EUR
View
A
Retailer 12
-
$13,921 USD
View
A
Retailer 13
-
$14,111 USD
View
B+
Retailer 14
-
$17,842 USD
£14,049 GBP
View
Most Expensive
B+
NZ Jewellers
9948dad4-082a-42e7-8916-57c10ffb9eec · Oct 30
$18,939 USD
View
14 more retailers have this diamond
Prices start from $9,963 USDSave up to $8,976 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
$9,963 USD