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Round|Natural|GIA

1.03ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 2566398726

Certificate GIA 2566398726

Diamond specifications and retailer prices

From $3,383 AUD
As of November 4, 2026
Save $4,217 AUD (55%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $7,600 AUD at NZ Jewellers · As of November 2, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2566398726. Listed at 16 retailers as of November 2, 2026, with prices from $3,383 to $7,600, a $4,217 spread on the same certified stone. NZ Jewellers lists it at $7,600. 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
FluorescenceFaint
Crown angle33.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2566398726
Dimensions6.53 × 6.55 × 3.95 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
6.53 mm6.55 mm1.03 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2566398726
Side View
Table 58.0%Crown 33.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.4%

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 4
Current: $7,600 AUD|Low: $3,383 AUD|High: $8,155 AUD|Avg: $4,880 AUD|-6.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 4, 2026
Retailer 2$3,383 AUD
Retailer 13$3,413 AUD
Retailer 10$3,806 AUD
Retailer 8$4,028 AUD
Retailer 4$4,113 AUD
Retailer 14$4,287 AUD
Retailer 7$4,307 AUD
Retailer 11$4,363 AUD
Retailer 9$4,457 AUD
Retailer 3$4,627 AUD
Retailer 5$4,783 AUD
Retailer 6$4,814 AUD
Retailer 12$4,977 AUD
Retailer 16$5,141 AUD
Retailer 15$7,452 AUD
NZ Jewellers$7,600 AUD

26 data points across 16 retailers

16 retailers$3,383 AUD to $7,600 AUD

A
Cheapest Retailer
-
$3,383 AUD
A
Retailer 2
-
$3,413 AUD
View
A
Retailer 3
-
$3,806 AUD
View
A
Retailer 4
-
$4,028 AUD
View
A
Retailer 5
-
$4,287 AUD
View
A
Retailer 6
-
$4,307 AUD
View
A
Retailer 7
-
$4,363 AUD
View
A
Retailer 8
-
$4,457 AUD
View
B+
Retailer 9
-
$4,627 AUD
View
B+
Retailer 10
-
$4,783 AUD
View
Retailer 11
-
$4,814 AUD
View
Price last confirmed 10 days ago
B+
Retailer 12
-
$4,977 AUD
View
B+
Retailer 13
-
$5,141 AUD
View
Retailer 14
-
$5,161 AUD
View
Price last confirmed 30 days ago
B
Retailer 15
-
$7,452 AUD
View
Most Expensive
B
NZ Jewellers
50fac8a4-b084-4287-902a-f994f3f5cc93 · Nov 2
$7,600 AUD
$5,320 USD
View
15 more retailers have this diamond
Prices start from $3,383 AUDSave up to $4,217 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.

A
1.03ct Round
$3,383 AUD