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1.03ct J SI1 Round Natural Diamond

EX • J/SI1 • IGI 320829434

Shape and cutting style on the report: Round brilliant

Certificate IGI 320829434

Diamond specifications and retailer prices

From $2,381 NZD
As of November 5, 2026
Save $3,884 NZD (62%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $6,265 NZD 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 320829434. Listed at 16 retailers as of November 5, 2026, with prices from $2,381 to $6,265, a $3,884 spread on the same certified stone. NZ Jewellers lists it at $6,265. 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
FluorescenceFaint
Crown angle34.3°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 320829434
Dimensions6.49 × 6.51 × 3.97 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.49 mm6.51 mm1.03 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 320829434
Side View
Table 58.5%Crown 34.3°Girdle: Med.Pavilion 40.8°Culet: NoneDepth 61.1%

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: $2,423 NZD|Low: $2,421 NZD|High: $4,760 NZD|Avg: $3,480 NZD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 1$2,423 NZD
Retailer 2$2,866 NZD
Retailer 4$3,133 NZD
Retailer 7$3,514 NZD
Retailer 3$3,555 NZD
Retailer 6$3,563 NZD
Retailer 8$4,183 NZD
Retailer 5$4,690 NZD

34 data points across 8 retailers

16 retailers$2,381 NZD to $6,265 NZD

A
Cheapest Retailer
-
$2,381 NZD
A
Retailer 2
-
$2,423 NZD
View
A
Retailer 3
-
$2,569 NZD
View
A
Retailer 4
-
$2,686 NZD
View
A
Retailer 5
-
$2,751 NZD
View
A
Retailer 6
-
$2,812 NZD
View
A
Retailer 7
-
$2,866 NZD
View
B+
Retailer 8
-
$2,964 NZD
View
B+
Retailer 9
-
$3,133 NZD
View
B+
Retailer 10
-
$3,514 NZD
View
B+
Retailer 11
-
$3,555 NZD
View
B+
Retailer 12
-
$3,563 NZD
View
B+
Retailer 13
-
$4,183 NZD
View
B
Retailer 14
-
$4,299 NZD
View
B
Retailer 15
-
$4,690 NZD
View
Most Expensive
B
NZ Jewellers
d73b867d-c73d-4f10-9083-f3f8b6bc4ade · Nov 5
$6,265 NZD
$3,473 USD
View
15 more retailers have this diamond
Prices start from $2,381 NZDSave up to $3,884 NZD

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
$2,381 NZD