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Round|Natural|IGI

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 $14,134 AUD
₹945,545 INR
As of October 31, 2026
Save $12,828 AUD (48%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $26,962 AUD 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 $14,134 to $26,962, a $12,828 spread on the same certified stone. NZ Jewellers lists it at $26,962. 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: $26,962 AUD|Low: $14,098 AUD|High: $26,962 AUD|Avg: $19,347 AUD
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 31, 2026
Retailer 2$14,134 AUD
Retailer 14$16,568 AUD
Retailer 13$16,945 AUD
Retailer 5$17,856 AUD
Retailer 15$17,994 AUD
Retailer 3$18,825 AUD
Retailer 11$18,839 AUD
Retailer 10$19,026 AUD
Retailer 12$19,046 AUD
Retailer 4$19,345 AUD
Retailer 8$19,504 AUD
Retailer 6$19,818 AUD
Retailer 7$20,088 AUD
Retailer 9$25,400 AUD
NZ Jewellers$26,962 AUD

46 data points across 15 retailers

15 retailers$14,134 AUD to $26,962 AUD

A
Cheapest Retailer
-
$14,134 AUD
₹945,545 INR
A
Retailer 2
-
$16,568 AUD
$11,638 USD
View
A
Retailer 3
-
$16,945 AUD
$11,903 USD
View
A
Retailer 4
-
$17,856 AUD
$12,543 USD
View
A
Retailer 5
-
$17,994 AUD
$12,640 USD
View
A
Retailer 6
-
$18,825 AUD
$13,223 USD
View
Retailer 7
-
$18,839 AUD
£10,420 GBP
View
Price last confirmed 31 days ago
A
Retailer 8
-
$19,026 AUD
$13,365 USD
View
A
Retailer 9
-
$19,046 AUD
$13,379 USD
View
A
Retailer 10
-
$19,345 AUD
$13,589 USD
View
A
Retailer 11
-
$19,504 AUD
€13,048 EUR
View
A
Retailer 12
-
$19,818 AUD
$13,921 USD
View
A
Retailer 13
-
$20,088 AUD
$14,111 USD
View
B+
Retailer 14
-
$25,400 AUD
£14,049 GBP
View
Most Expensive
B+
NZ Jewellers
9948dad4-082a-42e7-8916-57c10ffb9eec · Oct 30
$26,962 AUD
$18,939 USD
View
14 more retailers have this diamond
Prices start from $14,134 AUDSave up to $12,828 AUD

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
$14,134 AUD