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Round|Natural|IGI

1.03ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 648418582

Shape and cutting style on the report: Round brilliant

Certificate IGI 648418582

Diamond specifications and retailer prices

From $1,743 AUD
As of November 4, 2026
Save $2,844 AUD (62%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,587 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 648418582. Listed at 15 retailers as of November 4, 2026, with prices from $1,743 to $4,587, a $2,844 spread on the same certified stone. NZ Jewellers lists it at $4,587. 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle33.7°
Pavilion angle41.6°
OriginNatural
Grading LabIGI
CertificateIGI 648418582
Dimensions6.49 × 6.44 × 4.02 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
6.49 mm6.44 mm1.03 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 648418582
Side View
Table 57.0%Crown 33.7°Girdle: MediumPavilion 41.6°Culet: NoneDepth 62.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $1,798 AUD|Low: $1,743 AUD|High: $3,486 AUD|Avg: $2,186 AUD|-1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8$1,743 AUD
Retailer 6$1,778 AUD
Retailer 1$1,798 AUD
Retailer 9$1,967 AUD
Retailer 7$2,043 AUD
Retailer 2$2,150 AUD
Retailer 4$2,294 AUD
Retailer 3$2,297 AUD
Retailer 5$3,436 AUD

41 data points across 9 retailers

15 retailers$1,743 AUD to $4,587 AUD

A
Cheapest Retailer
-
$1,743 AUD
A
Retailer 2
-
$1,778 AUD
View
A
Retailer 3
-
$1,798 AUD
View
A
Retailer 4
-
$1,854 AUD
View
Retailer 5
-
$1,881 AUD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$1,881 AUD
View
A
Retailer 7
-
$1,967 AUD
View
A
Retailer 8
-
$2,043 AUD
View
A
Retailer 9
-
$2,073 AUD
View
A
Retailer 10
-
$2,150 AUD
View
B+
Retailer 11
-
$2,170 AUD
View
A
Retailer 12
-
$2,294 AUD
View
A
Retailer 13
-
$2,297 AUD
View
B
Retailer 14
-
$3,436 AUD
View
Most Expensive
B
NZ Jewellers
f45d1d6c-b963-4e77-8cbb-49c732f40dcc · Nov 5
$4,587 AUD
$3,211 USD
View
14 more retailers have this diamond
Prices start from $1,743 AUDSave up to $2,844 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
$1,743 AUD