CaratHunter
Plans
Round|Natural|IGI

1.03ct J SI1 Round Natural Diamond

EX • J/SI1 • IGI 825677309

Shape and cutting style on the report: Round brilliant

Certificate IGI 825677309

Diamond specifications and retailer prices

From $2,188 AUD
As of November 5, 2026
Save $3,667 AUD (63%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $5,855 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 825677309. Listed at 14 retailers as of November 5, 2026, with prices from $2,188 to $5,855, a $3,667 spread on the same certified stone. NZ Jewellers lists it at $5,855. 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
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.9°
OriginNatural
Grading LabIGI
CertificateIGI 825677309
Dimensions6.43 × 6.46 × 4.02 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.43 mm6.46 mm1.03 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 825677309
Side View
Table 57.0%Crown 35.4°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.3%

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 5
Current: $2,266 AUD|Low: $2,214 AUD|High: $4,256 AUD|Avg: $2,912 AUD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 7$2,214 AUD
Retailer 1$2,266 AUD
Retailer 2$2,694 AUD
Retailer 3$2,793 AUD
Retailer 5$2,930 AUD
Retailer 4$3,253 AUD
Retailer 6$4,194 AUD

34 data points across 7 retailers

14 retailers$2,188 AUD to $5,855 AUD

A
Cheapest Retailer
-
$2,188 AUD
A
Retailer 2
-
$2,214 AUD
View
Final sale: no returns
A
Retailer 3
-
$2,266 AUD
View
Retailer 4
-
$2,401 AUD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$2,401 AUD
View
A
Retailer 6
-
$2,500 AUD
View
B+
Retailer 7
-
$2,511 AUD
View
B+
Retailer 8
-
$2,694 AUD
View
B+
Retailer 9
-
$2,770 AUD
View
B+
Retailer 10
-
$2,793 AUD
View
B+
Retailer 11
-
$2,930 AUD
View
B+
Retailer 12
-
$3,253 AUD
View
B
Retailer 13
-
$4,194 AUD
View
Most Expensive
B
NZ Jewellers
e61d0523-7643-42e5-af4a-3b1fe5f5a3ac · Nov 5
$5,855 AUD
$4,099 USD
View
13 more retailers have this diamond
Prices start from $2,188 AUDSave up to $3,667 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
$2,188 AUD