Round|Natural|GIA

1.03ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2497177228

Certificate GIA 2497177228

Diamond specifications and retailer prices

From €1,386 EUR
As of November 6, 2026
Save €1,446 EUR (51%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €3,866 EUR at NZ Jewellers · As of September 28, 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 GIA 2497177228. Listed at 13 retailers as of November 4, 2026, with a 104% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2497177228
Dimensions6.44 × 6.41 × 3.98 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.44 mm6.41 mm1.03 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2497177228
Side View
Table 58.0%Crown 36°Girdle: ThickPavilion 40.6°Culet: NoneDepth 62.0%

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 6
Current: €1,979 EUR|Low: €1,341 EUR|High: €2,870 EUR|Avg: €1,931 EUR|+5.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 5€1,386 EUR
Retailer 7€1,477 EUR
Retailer 8€1,670 EUR
Retailer 6€1,744 EUR
Retailer 3€1,789 EUR
Retailer 1€1,979 EUR
Retailer 9€2,067 EUR
Retailer 2€2,198 EUR
Retailer 4€2,832 EUR

41 data points across 9 retailers

13 retailers€1,386 EUR to €2,832 EUR

A
Cheapest Retailer
-
€1,386 EUR
A
Retailer 2
-
€1,477 EUR
View
Retailer 3
-
€1,584 EUR
View
Price last confirmed 29 days ago
Retailer 4
-
€1,658 EUR
View
Price last confirmed 38 days ago
B+
Retailer 5
-
€1,670 EUR
View
B+
Retailer 6
-
€1,744 EUR
View
B+
Retailer 7
-
€1,789 EUR
View
Retailer 8
-
€1,829 EUR
View
Price last confirmed 38 days ago
B+
Retailer 9
-
€1,979 EUR
View
Retailer 10
-
€2,067 EUR
View
Price last confirmed 32 days ago
B
Retailer 11
-
€2,198 EUR
View
B
Retailer 12
-
€2,832 EUR
View
Most Expensive
NZ Jewellers
aacb12da-af33-44e7-8bc4-44ee2ea07698 · Sep 28
€3,866 EUR
$4,316 USD
View
Price last confirmed 39 days ago
12 more retailers have this diamond
Prices start from €1,386 EURSave up to €1,446 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
€1,386 EUR