Round|Natural|GIA

1.03ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1505020864

Certificate GIA 1505020864

Diamond specifications and retailer prices

From $3,241 USD
As of November 4, 2026
Save $4,328 USD (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $7,569 USD 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 $3,241 to $7,569, a $4,328 spread on the same certified stone. Diamond Quarter lists it at $7,569. 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
Color
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: $4,633 USD|Low: $2,920 USD|High: $6,424 USD|Avg: $4,252 USD|+1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 8$3,419 USD
Retailer 5$3,504 USD
Retailer 7$3,796 USD
Retailer 3$3,904 USD
Retailer 6$4,066 USD
Retailer 2$4,415 USD
Retailer 1$4,633 USD
Retailer 4$6,348 USD

40 data points across 8 retailers

18 retailers$3,241 USD to $7,569 USD

B+
Cheapest Retailer
-
$3,241 USD
B+
Retailer 2
-
$3,370 USD
View
B+
Retailer 3
-
$3,419 USD
View
B+
Retailer 4
-
$3,504 USD
View
Final sale: no returns
B+
Retailer 5
-
$3,635 USD
View
Retailer 6
-
$3,796 USD
View
Price last confirmed 8 days ago
Retailer 7
-
$3,796 USD
View
Price last confirmed 36 days ago
B+
Retailer 8
-
$3,904 USD
View
Retailer 9
-
$3,942 USD
View
Price last confirmed 38 days ago
B+
Retailer 10
-
$3,942 USD
View
Retailer 11
-
$4,066 USD
View
Price last confirmed 29 days ago
Retailer 12
-
$4,380 USD
View
Price last confirmed 38 days ago
B+
Retailer 13
-
$4,415 USD
View
B+
Retailer 14
-
$4,633 USD
View
B
Retailer 15
-
$6,348 USD
View
Retailer 16
-
$6,613 USD
View
Price last confirmed 39 days ago
B
Retailer 17
-
$6,613 USD
View
Most Expensive
B
Diamond Quarter
1.03SI1E15648828N · Nov 5
$7,569 USD
£5,960 GBP
View
17 more retailers have this diamond
Prices start from $3,241 USDSave up to $4,328 USD

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
$3,241 USD