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Round|Natural|IGI

1.03ct I SI1 Round Natural Diamond

EX • I/SI1 • IGI 754512609

Shape and cutting style on the report: Round brilliant

Certificate IGI 754512609

Diamond specifications and retailer prices

From $2,388 AUD
As of November 6, 2026
Save $4,040 AUD (63%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $6,428 AUD at NZ Jewellers · As of November 5, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 754512609. Listed at 21 retailers as of November 5, 2026, with prices from $2,388 to $6,428, a $4,040 spread on the same certified stone. NZ Jewellers lists it at $6,428. 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.4°
Pavilion angle41.8°
OriginNatural
Grading LabIGI
CertificateIGI 754512609
Dimensions6.49 × 6.53 × 3.99 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.49 mm6.53 mm1.03 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 754512609
Side View
Table 59.0%Crown 31.4°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 61.3%

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: $6,428 AUD|Low: $2,388 AUD|High: $6,428 AUD|Avg: $3,546 AUD
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
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 6, 2026
Retailer 2$2,388 AUD
Retailer 10$2,700 AUD
Retailer 9$2,777 AUD
Retailer 11$2,837 AUD
Retailer 18$2,866 AUD
Retailer 13$2,941 AUD
Retailer 5$3,074 AUD
Retailer 7$3,074 AUD
Retailer 21$3,100 AUD
Retailer 3$3,124 AUD
Retailer 6$3,217 AUD
Retailer 4$3,273 AUD
Retailer 8$3,377 AUD
Retailer 19$3,378 AUD
Retailer 16$3,528 AUD
Retailer 12$3,547 AUD
Retailer 17$3,753 AUD
Retailer 15$4,083 AUD
Retailer 14$4,615 AUD
Retailer 20$5,371 AUD
NZ Jewellers$6,428 AUD

21 data points across 21 retailers

21 retailers$2,388 AUD to $6,428 AUD

A
Cheapest Retailer
-
$2,388 AUD
A
Retailer 2
-
$2,700 AUD
View
A
Retailer 3
-
$2,777 AUD
View
A
Retailer 4
-
$2,837 AUD
View
Final sale: no returns
A
Retailer 5
-
$2,866 AUD
View
A
Retailer 6
-
$2,941 AUD
View
A
Retailer 7
-
$3,074 AUD
View
Retailer 8
-
$3,074 AUD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$3,100 AUD
View
A
Retailer 10
-
$3,124 AUD
View
A
Retailer 11
-
$3,217 AUD
View
B+
Retailer 12
-
$3,273 AUD
View
B+
Retailer 13
-
$3,377 AUD
View
A
Retailer 14
-
$3,378 AUD
View
B+
Retailer 15
-
$3,528 AUD
View
B+
Retailer 16
-
$3,547 AUD
View
B+
Retailer 17
-
$3,753 AUD
View
B+
Retailer 18
-
$4,083 AUD
View
B
Retailer 19
-
$4,615 AUD
View
B
Retailer 20
-
$5,371 AUD
View
Most Expensive
B
NZ Jewellers
8a27d3b3-6ae1-4384-927b-ca29b6703e37 · Nov 5
$6,428 AUD
$4,500 USD
View
20 more retailers have this diamond
Prices start from $2,388 AUDSave up to $4,040 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
$2,388 AUD