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Round|Natural|IGI

1.23ct J SI2 Round Natural Diamond

EX • J/SI2 • IGI 833602422

Shape and cutting style on the report: Round brilliant

Certificate IGI 833602422

Diamond specifications and retailer prices

From $1,597 AUD
As of November 6, 2026
Save $3,637 AUD (69%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $5,234 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.23ct natural round diamond

This 1.23ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 833602422. Listed at 15 retailers as of November 5, 2026, with prices from $1,597 to $5,234, a $3,637 spread on the same certified stone. NZ Jewellers lists it at $5,234. 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

1.23
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.2°
Pavilion angle40.5°
OriginNatural
Grading LabIGI
CertificateIGI 833602422
Dimensions6.83 × 6.89 × 4.18 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.83 mm6.89 mm1.23 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 833602422
Side View
Table 61.0%Crown 36.2°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 60.9%

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 6
Current: $5,234 AUD|Low: $1,597 AUD|High: $5,234 AUD|Avg: $2,526 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
November 6, 2026
Retailer 2$1,597 AUD
Retailer 3$1,979 AUD
Retailer 12$1,987 AUD
Retailer 6$1,988 AUD
Retailer 8$2,052 AUD
Retailer 7$2,145 AUD
Retailer 13$2,145 AUD
Retailer 4$2,237 AUD
Retailer 15$2,240 AUD
Retailer 14$2,244 AUD
Retailer 5$2,476 AUD
Retailer 10$2,513 AUD
Retailer 9$2,767 AUD
Retailer 11$3,748 AUD
NZ Jewellers$5,234 AUD

41 data points across 15 retailers

15 retailers$1,597 AUD to $5,234 AUD

A
Cheapest Retailer
-
$1,597 AUD
A
Retailer 2
-
$1,979 AUD
View
Final sale: no returns
A
Retailer 3
-
$1,987 AUD
View
A
Retailer 4
-
$1,988 AUD
View
A
Retailer 5
-
$2,052 AUD
View
Retailer 6
-
$2,145 AUD
View
Price last confirmed 9 days ago
A
Retailer 7
-
$2,145 AUD
View
B+
Retailer 8
-
$2,237 AUD
View
B+
Retailer 9
-
$2,240 AUD
View
B+
Retailer 10
-
$2,244 AUD
View
B+
Retailer 11
-
$2,476 AUD
View
A
Retailer 12
-
$2,513 AUD
View
A
Retailer 13
-
$2,767 AUD
View
B+
Retailer 14
-
$3,748 AUD
View
Most Expensive
B
NZ Jewellers
34ba6b30-4a1b-4995-bdf9-ad59beae8489 · Nov 5
$5,234 AUD
$3,596 USD
View
14 more retailers have this diamond
Prices start from $1,597 AUDSave up to $3,637 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
1.23ct Round
$1,597 AUD