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1.03ct J SI1 Round Natural Diamond

EX • J/SI1 • IGI 825677309

Shape and cutting style on the report: Round brilliant

Certificate IGI 825677309

Diamond specifications and retailer prices

From €1,372 EUR
As of November 5, 2026
Save €2,299 EUR (63%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €3,671 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 825677309. Listed at 14 retailers as of November 5, 2026, with prices from €1,372 to €3,671, a €2,299 spread on the same certified stone. NZ Jewellers lists it at €3,671. 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
FluorescenceNone
Crown angle35.4°
Pavilion angle40.9°
OriginNatural
Grading LabIGI
CertificateIGI 825677309
Dimensions6.43 × 6.46 × 4.02 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.43 mm6.46 mm1.03 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 825677309
Side View
Table 57.0%Crown 35.4°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.3%

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 5
Current: €1,421 EUR|Low: €1,388 EUR|High: €2,668 EUR|Avg: €1,826 EUR|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 7€1,388 EUR
Retailer 1€1,421 EUR
Retailer 2€1,689 EUR
Retailer 3€1,751 EUR
Retailer 5€1,837 EUR
Retailer 4€2,039 EUR
Retailer 6€2,630 EUR

34 data points across 7 retailers

14 retailers€1,372 EUR to €3,671 EUR

A
Cheapest Retailer
-
€1,372 EUR
A
Retailer 2
-
€1,388 EUR
View
Final sale: no returns
A
Retailer 3
-
€1,421 EUR
View
Retailer 4
-
€1,506 EUR
View
Price last confirmed 8 days ago
A
Retailer 5
-
€1,506 EUR
View
A
Retailer 6
-
€1,567 EUR
View
B+
Retailer 7
-
€1,575 EUR
View
B+
Retailer 8
-
€1,689 EUR
View
B+
Retailer 9
-
€1,737 EUR
View
B+
Retailer 10
-
€1,751 EUR
View
B+
Retailer 11
-
€1,837 EUR
View
B+
Retailer 12
-
€2,039 EUR
View
B
Retailer 13
-
€2,630 EUR
View
Most Expensive
B
NZ Jewellers
e61d0523-7643-42e5-af4a-3b1fe5f5a3ac · Nov 5
€3,671 EUR
$4,099 USD
View
13 more retailers have this diamond
Prices start from €1,372 EURSave up to €2,299 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
€1,372 EUR