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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 €983 EUR
As of November 6, 2026
Save €2,238 EUR (69%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €3,221 EUR 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 €983 to €3,221, a €2,238 spread on the same certified stone. NZ Jewellers lists it at €3,221. 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: €3,221 EUR|Low: €983 EUR|High: €3,221 EUR|Avg: €1,554 EUR
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€983 EUR
Retailer 3€1,218 EUR
Retailer 12€1,223 EUR
Retailer 6€1,223 EUR
Retailer 8€1,263 EUR
Retailer 7€1,320 EUR
Retailer 13€1,320 EUR
Retailer 4€1,377 EUR
Retailer 15€1,378 EUR
Retailer 14€1,381 EUR
Retailer 5€1,524 EUR
Retailer 10€1,547 EUR
Retailer 9€1,703 EUR
Retailer 11€2,306 EUR
NZ Jewellers€3,221 EUR

41 data points across 15 retailers

15 retailers€983 EUR to €3,221 EUR

A
Cheapest Retailer
-
€983 EUR
A
Retailer 2
-
€1,218 EUR
View
Final sale: no returns
A
Retailer 3
-
€1,223 EUR
View
A
Retailer 4
-
€1,223 EUR
View
A
Retailer 5
-
€1,263 EUR
View
Retailer 6
-
€1,320 EUR
View
Price last confirmed 9 days ago
A
Retailer 7
-
€1,320 EUR
View
B+
Retailer 8
-
€1,377 EUR
View
B+
Retailer 9
-
€1,378 EUR
View
B+
Retailer 10
-
€1,381 EUR
View
B+
Retailer 11
-
€1,524 EUR
View
A
Retailer 12
-
€1,547 EUR
View
A
Retailer 13
-
€1,703 EUR
View
B+
Retailer 14
-
€2,306 EUR
View
Most Expensive
B
NZ Jewellers
34ba6b30-4a1b-4995-bdf9-ad59beae8489 · Nov 5
€3,221 EUR
$3,596 USD
View
14 more retailers have this diamond
Prices start from €983 EURSave up to €2,238 EUR

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
€983 EUR