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1.03ct J SI1 Round Natural Diamond

EX • J/SI1 • IGI 320829434

Shape and cutting style on the report: Round brilliant

Certificate IGI 320829434

Diamond specifications and retailer prices

From €1,182 EUR
As of November 5, 2026
Save €1,928 EUR (62%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €3,111 EUR at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.03ct natural round diamond

This 1.03ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 320829434. Listed at 16 retailers as of November 5, 2026, with prices from €1,182 to €3,111, a €1,928 spread on the same certified stone. NZ Jewellers lists it at €3,111. 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

1.03
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34.3°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 320829434
Dimensions6.49 × 6.51 × 3.97 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.49 mm6.51 mm1.03 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 320829434
Side View
Table 58.5%Crown 34.3°Girdle: Med.Pavilion 40.8°Culet: NoneDepth 61.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: €1,203 EUR|Low: €1,202 EUR|High: €2,364 EUR|Avg: €1,728 EUR|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 1€1,203 EUR
Retailer 2€1,423 EUR
Retailer 4€1,556 EUR
Retailer 7€1,745 EUR
Retailer 3€1,765 EUR
Retailer 6€1,769 EUR
Retailer 8€2,077 EUR
Retailer 5€2,329 EUR

34 data points across 8 retailers

16 retailers€1,182 EUR to €3,111 EUR

A
Cheapest Retailer
-
€1,182 EUR
A
Retailer 2
-
€1,203 EUR
View
A
Retailer 3
-
€1,275 EUR
View
A
Retailer 4
-
€1,334 EUR
View
A
Retailer 5
-
€1,366 EUR
View
A
Retailer 6
-
€1,396 EUR
View
A
Retailer 7
-
€1,423 EUR
View
B+
Retailer 8
-
€1,472 EUR
View
B+
Retailer 9
-
€1,556 EUR
View
B+
Retailer 10
-
€1,745 EUR
View
B+
Retailer 11
-
€1,765 EUR
View
B+
Retailer 12
-
€1,769 EUR
View
B+
Retailer 13
-
€2,077 EUR
View
B
Retailer 14
-
€2,134 EUR
View
B
Retailer 15
-
€2,329 EUR
View
Most Expensive
B
NZ Jewellers
d73b867d-c73d-4f10-9083-f3f8b6bc4ade · Nov 5
€3,111 EUR
$3,473 USD
View
15 more retailers have this diamond
Prices start from €1,182 EURSave up to €1,928 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
1.03ct Round
€1,182 EUR