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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 $17,645 NZD
₹945,545 INR
As of October 31, 2026
Save $16,015 NZD (48%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $33,660 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 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 $17,645 to $33,660, a $16,015 spread on the same certified stone. NZ Jewellers lists it at $33,660. 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
Colour
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 31
Current: $33,660 NZD|Low: $17,600 NZD|High: $33,660 NZD|Avg: $24,178 NZD
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
November 1, 2026
Retailer 8$17,645 NZD
Retailer 14$20,684 NZD
Retailer 13$21,155 NZD
Retailer 5$22,293 NZD
Retailer 15$22,465 NZD
Retailer 3$23,502 NZD
Retailer 11$23,519 NZD
Retailer 10$23,754 NZD
Retailer 12$23,778 NZD
Retailer 4$24,152 NZD
Retailer 9$24,350 NZD
Retailer 6$24,741 NZD
Retailer 7$25,079 NZD
Retailer 2$31,542 NZD
NZ Jewellers$33,660 NZD

44 data points across 15 retailers

15 retailers$17,645 NZD to $33,660 NZD

A
Cheapest Retailer
-
$17,645 NZD
₹945,545 INR
A
Retailer 2
-
$20,684 NZD
$11,638 USD
View
A
Retailer 3
-
$21,155 NZD
$11,903 USD
View
A
Retailer 4
-
$22,293 NZD
$12,543 USD
View
A
Retailer 5
-
$22,465 NZD
$12,640 USD
View
A
Retailer 6
-
$23,502 NZD
$13,223 USD
View
Retailer 7
-
$23,519 NZD
£10,420 GBP
View
Price last confirmed 34 days ago
Retailer 8
-
$23,754 NZD
$13,365 USD
View
Price last confirmed 8 days ago
A
Retailer 9
-
$23,778 NZD
$13,379 USD
View
A
Retailer 10
-
$24,152 NZD
$13,589 USD
View
A
Retailer 11
-
$24,350 NZD
€13,048 EUR
View
A
Retailer 12
-
$24,741 NZD
$13,921 USD
View
A
Retailer 13
-
$25,079 NZD
$14,111 USD
View
B+
Retailer 14
-
$31,542 NZD
£13,974 GBP
View
Most Expensive
B+
NZ Jewellers
9948dad4-082a-42e7-8916-57c10ffb9eec · Oct 30
$33,660 NZD
$18,939 USD
View
14 more retailers have this diamond
Prices start from $17,645 NZDSave up to $16,015 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
$17,645 NZD