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Round|Natural|GIA

1.03ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1505020864

Certificate GIA 1505020864

Diamond specifications and retailer prices

From €2,888 EUR
As of November 4, 2026
Save €3,856 EUR (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €6,743 EUR at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.03ct natural round diamond

This 1.03ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1505020864. Listed at 18 retailers as of November 4, 2026, with prices from €2,888 to €6,743, a €3,856 spread on the same certified stone. Diamond Quarter lists it at €6,743. 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
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1505020864
Dimensions6.39 × 6.44 × 4.03 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
6.39 mm6.44 mm1.03 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1505020864
Side View
Table 57.0%Crown 36.5°Girdle: MediumPavilion 40.8°Culet: NDepth 62.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: €4,128 EUR|Low: €2,602 EUR|High: €5,723 EUR|Avg: €3,788 EUR|+1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 8€3,046 EUR
Retailer 5€3,122 EUR
Retailer 7€3,382 EUR
Retailer 3€3,478 EUR
Retailer 6€3,623 EUR
Retailer 2€3,934 EUR
Retailer 1€4,128 EUR
Retailer 4€5,656 EUR

40 data points across 8 retailers

18 retailers€2,888 EUR to €6,743 EUR

B+
Cheapest Retailer
-
€2,888 EUR
B+
Retailer 2
-
€3,003 EUR
View
B+
Retailer 3
-
€3,046 EUR
View
B+
Retailer 4
-
€3,122 EUR
View
Final sale: no returns
B+
Retailer 5
-
€3,239 EUR
View
Retailer 6
-
€3,382 EUR
View
Price last confirmed 8 days ago
Retailer 7
-
€3,382 EUR
View
Price last confirmed 36 days ago
B+
Retailer 8
-
€3,478 EUR
View
Retailer 9
-
€3,512 EUR
View
Price last confirmed 38 days ago
B+
Retailer 10
-
€3,512 EUR
View
Retailer 11
-
€3,623 EUR
View
Price last confirmed 29 days ago
Retailer 12
-
€3,902 EUR
View
Price last confirmed 38 days ago
B+
Retailer 13
-
€3,934 EUR
View
B+
Retailer 14
-
€4,128 EUR
View
B
Retailer 15
-
€5,656 EUR
View
Retailer 16
-
€5,892 EUR
View
Price last confirmed 39 days ago
B
Retailer 17
-
€5,892 EUR
View
Most Expensive
B
Diamond Quarter
1.03SI1E15648828N · Nov 5
€6,743 EUR
£5,960 GBP
View
17 more retailers have this diamond
Prices start from €2,888 EURSave up to €3,856 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.

B+
1.03ct Round
€2,888 EUR