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2.51ct H SI2 Round Natural Diamond

EX • H/SI2 • IGI 782657587

Shape and cutting style on the report: Round brilliant

Certificate IGI 782657587

Diamond specifications and retailer prices

From $14,139 AUD
₹945,910 INR
As of November 1, 2026
Save $12,822 AUD (48%) vs most expensive(unlock to see where)
10 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 782657587. Listed at 10 retailers as of October 30, 2026, with prices from $14,139 to $26,962, a $12,822 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 angle36.1°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 782657587
Dimensions8.60 × 8.71 × 5.36 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
8.60 mm8.71 mm2.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 782657587
Side View
Table 59.0%Crown 36.1°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.9%

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: $26,962 AUD|Low: $14,138 AUD|High: $26,962 AUD|Avg: $20,515 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 2$14,139 AUD
Retailer 6$17,112 AUD
Retailer 4$18,613 AUD
Retailer 7$19,046 AUD
Retailer 5$19,514 AUD
Retailer 3$25,265 AUD
NZ Jewellers$26,962 AUD

45 data points across 7 retailers

10 retailers$14,139 AUD to $26,962 AUD

A
Cheapest Retailer
-
$14,139 AUD
₹945,910 INR
A
Retailer 2
-
$17,112 AUD
$12,020 USD
View
Final sale: no returns
A
Retailer 3
-
$18,613 AUD
£10,295 GBP
View
A
Retailer 4
-
$19,046 AUD
$13,379 USD
View
A
Retailer 5
-
$19,345 AUD
$13,589 USD
View
A
Retailer 6
-
$19,514 AUD
€13,055 EUR
View
A
Retailer 7
-
$19,818 AUD
$13,921 USD
View
A
Retailer 8
-
$20,088 AUD
$14,111 USD
View
B+
Retailer 9
-
$25,265 AUD
£13,974 GBP
View
Most Expensive
B+
NZ Jewellers
d855b935-a21d-4933-aa46-cf53e3c11b8f · Oct 30
$26,962 AUD
$18,939 USD
View
9 more retailers have this diamond
Prices start from $14,139 AUDSave up to $12,822 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
$14,139 AUD