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Round|Natural|IGI

1.03ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 843680328

Shape and cutting style on the report: Round brilliant

Certificate IGI 843680328

Diamond specifications and retailer prices

From $1,500 AUD
As of November 1, 2026
Save $2,516 AUD (63%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,016 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 843680328. Listed at 15 retailers as of November 1, 2026, with prices from $1,500 to $4,016, a $2,516 spread on the same certified stone. NZ Jewellers lists it at $4,016. 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
FluorescenceNone
Crown angle35.9°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 843680328
Dimensions6.43 × 6.40 × 4.05 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.43 mm6.40 mm1.03 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 843680328
Side View
Table 59.0%Crown 35.9°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.9%

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 1
Current: $1,931 AUD|Low: $1,578 AUD|High: $2,311 AUD|Avg: $1,804 AUD|-1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 4, 2026
Retailer 2$1,578 AUD
Retailer 6$1,578 AUD
Retailer 3$1,580 AUD
Retailer 9$1,647 AUD
Retailer 10$1,708 AUD
Retailer 8$1,837 AUD
Retailer 5$1,928 AUD
Retailer 1$1,931 AUD
Retailer 7$2,008 AUD
Retailer 4$2,297 AUD

16 data points across 10 retailers

15 retailers$1,500 AUD to $4,016 AUD

A
Cheapest Retailer
-
$1,500 AUD
A
Retailer 2
-
$1,578 AUD
View
A
Retailer 3
-
$1,578 AUD
View
A
Retailer 4
-
$1,580 AUD
View
A
Retailer 5
-
$1,614 AUD
View
Retailer 6
-
$1,647 AUD
View
Price last confirmed 8 days ago
Retailer 7
-
$1,647 AUD
View
Price last confirmed 8 days ago
A
Retailer 8
-
$1,708 AUD
View
Retailer 9
-
$1,710 AUD
View
Price last confirmed 8 days ago
A
Retailer 10
-
$1,837 AUD
View
B+
Retailer 11
-
$1,928 AUD
View
A
Retailer 12
-
$1,931 AUD
View
B+
Retailer 13
-
$2,008 AUD
View
A
Retailer 14
-
$2,297 AUD
View
Most Expensive
B
NZ Jewellers
a99e7a8a-d8b4-41cd-a0ea-3dc776b9a62e · Nov 2
$4,016 AUD
$2,811 USD
View
14 more retailers have this diamond
Prices start from $1,500 AUDSave up to $2,516 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
$1,500 AUD