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1.26ct J SI2 Round Natural Diamond

EX • J/SI2 • IGI 839696421

Shape and cutting style on the report: Round brilliant

Certificate IGI 839696421

Diamond specifications and retailer prices

From $1,665 AUD
£921 GBP
As of October 30, 2026
Save $2,542 AUD (60%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $4,207 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.26ct natural round diamond

This 1.26ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 839696421. Listed at 8 retailers as of October 30, 2026, with prices from $1,665 to $4,207, a $2,542 spread on the same certified stone. NZ Jewellers lists it at $4,207. 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

1.26
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle41°
OriginNatural
Grading LabIGI
CertificateIGI 839696421
Dimensions6.82 × 6.87 × 4.32 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.82 mm6.87 mm1.26 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 839696421
Side View
Table 58.0%Crown 36.4°Girdle: MED-STKPavilion 41°Culet: NoneDepth 63.0%

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: Oct 30
Current: $4,207 AUD|Low: $1,659 AUD|High: $4,207 AUD|Avg: $2,375 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 3$1,665 AUD
Retailer 7$1,725 AUD
Retailer 5$1,791 AUD
Retailer 8$1,815 AUD
Retailer 6$1,927 AUD
Retailer 2$2,401 AUD
Retailer 4$3,177 AUD
NZ Jewellers$4,207 AUD

16 data points across 8 retailers

8 retailers$1,665 AUD to $4,207 AUD

A
Cheapest Retailer
-
$1,665 AUD
£921 GBP
A
Retailer 2
-
$1,725 AUD
$1,212 USD
View
A
Retailer 3
-
$1,791 AUD
$1,258 USD
View
A
Retailer 4
-
$1,815 AUD
$1,275 USD
View
A
Retailer 5
-
$1,927 AUD
$1,354 USD
View
A
Retailer 6
-
$2,401 AUD
€1,606 EUR
View
A
Retailer 7
-
$3,177 AUD
£1,757 GBP
View
Most Expensive
B
NZ Jewellers
f2405b3e-dde7-419b-8f64-bf87b0b779d8 · Oct 30
$4,207 AUD
$2,955 USD
View
7 more retailers have this diamond
Prices start from $1,665 AUDSave up to $2,542 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
1.26ct Round
$1,665 AUD