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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 $4,630 AUD
As of November 4, 2026
Save $6,182 AUD (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $10,812 AUD 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 $4,630 to $10,812, a $6,182 spread on the same certified stone. Diamond Quarter lists it at $10,812. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $6,618 AUD|Low: $4,171 AUD|High: $9,177 AUD|Avg: $6,074 AUD|+1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 8$4,884 AUD
Retailer 5$5,005 AUD
Retailer 7$5,423 AUD
Retailer 3$5,577 AUD
Retailer 6$5,808 AUD
Retailer 2$6,307 AUD
Retailer 1$6,618 AUD
Retailer 4$9,068 AUD

40 data points across 8 retailers

18 retailers$4,630 AUD to $10,812 AUD

B+
Cheapest Retailer
-
$4,630 AUD
B+
Retailer 2
-
$4,814 AUD
View
B+
Retailer 3
-
$4,884 AUD
View
B+
Retailer 4
-
$5,005 AUD
View
Final sale: no returns
B+
Retailer 5
-
$5,193 AUD
View
Retailer 6
-
$5,423 AUD
View
Price last confirmed 8 days ago
Retailer 7
-
$5,423 AUD
View
Price last confirmed 36 days ago
B+
Retailer 8
-
$5,577 AUD
View
Retailer 9
-
$5,631 AUD
View
Price last confirmed 38 days ago
B+
Retailer 10
-
$5,631 AUD
View
Retailer 11
-
$5,808 AUD
View
Price last confirmed 29 days ago
Retailer 12
-
$6,257 AUD
View
Price last confirmed 38 days ago
B+
Retailer 13
-
$6,307 AUD
View
B+
Retailer 14
-
$6,618 AUD
View
B
Retailer 15
-
$9,068 AUD
View
Retailer 16
-
$9,447 AUD
View
Price last confirmed 39 days ago
B
Retailer 17
-
$9,447 AUD
View
Most Expensive
B
Diamond Quarter
1.03SI1E15648828N · Nov 5
$10,812 AUD
£5,960 GBP
View
17 more retailers have this diamond
Prices start from $4,630 AUDSave up to $6,182 AUD

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
$4,630 AUD