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 $1,097 USD
As of November 6, 2026
Save $2,499 USD (69%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,596 USD 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 $1,097 to $3,596, a $2,499 spread on the same certified stone. NZ Jewellers lists it at $3,596. 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
Color
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

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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: $3,596 USD|Low: $1,097 USD|High: $3,596 USD|Avg: $1,735 USD
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$1,097 USD
Retailer 3$1,360 USD
Retailer 12$1,365 USD
Retailer 6$1,366 USD
Retailer 8$1,410 USD
Retailer 7$1,474 USD
Retailer 13$1,474 USD
Retailer 4$1,537 USD
Retailer 15$1,539 USD
Retailer 14$1,542 USD
Retailer 5$1,701 USD
Retailer 10$1,727 USD
Retailer 9$1,901 USD
Retailer 11$2,575 USD
NZ Jewellers$3,596 USD

41 data points across 15 retailers

15 retailers$1,097 USD to $3,596 USD

A
Cheapest Retailer
-
$1,097 USD
A
Retailer 2
-
$1,360 USD
View
Final sale: no returns
A
Retailer 3
-
$1,365 USD
View
A
Retailer 4
-
$1,366 USD
View
A
Retailer 5
-
$1,410 USD
View
Retailer 6
-
$1,474 USD
View
Price last confirmed 8 days ago
A
Retailer 7
-
$1,474 USD
View
B+
Retailer 8
-
$1,537 USD
View
B+
Retailer 9
-
$1,539 USD
View
B+
Retailer 10
-
$1,542 USD
View
B+
Retailer 11
-
$1,701 USD
View
A
Retailer 12
-
$1,727 USD
View
A
Retailer 13
-
$1,901 USD
View
B+
Retailer 14
-
$2,575 USD
View
Most Expensive
B
NZ Jewellers
34ba6b30-4a1b-4995-bdf9-ad59beae8489 · Nov 5
$3,596 USD
View
14 more retailers have this diamond
Prices start from $1,097 USDSave up to $2,499 USD

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
$1,097 USD