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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 $1,320 USD
As of November 5, 2026
Save $2,153 USD (62%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,473 USD 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 $1,320 to $3,473, a $2,153 spread on the same certified stone. NZ Jewellers lists it at $3,473. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $1,343 USD|Low: $1,342 USD|High: $2,639 USD|Avg: $1,929 USD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 1$1,343 USD
Retailer 2$1,589 USD
Retailer 4$1,737 USD
Retailer 7$1,948 USD
Retailer 3$1,971 USD
Retailer 6$1,975 USD
Retailer 8$2,319 USD
Retailer 5$2,600 USD

34 data points across 8 retailers

16 retailers$1,320 USD to $3,473 USD

A
Cheapest Retailer
-
$1,320 USD
A
Retailer 2
-
$1,343 USD
View
A
Retailer 3
-
$1,424 USD
View
A
Retailer 4
-
$1,489 USD
View
A
Retailer 5
-
$1,525 USD
View
A
Retailer 6
-
$1,559 USD
View
A
Retailer 7
-
$1,589 USD
View
B+
Retailer 8
-
$1,643 USD
View
B+
Retailer 9
-
$1,737 USD
View
B+
Retailer 10
-
$1,948 USD
View
B+
Retailer 11
-
$1,971 USD
View
B+
Retailer 12
-
$1,975 USD
View
B+
Retailer 13
-
$2,319 USD
View
B
Retailer 14
-
$2,383 USD
View
B
Retailer 15
-
$2,600 USD
View
Most Expensive
B
NZ Jewellers
d73b867d-c73d-4f10-9083-f3f8b6bc4ade · Nov 5
$3,473 USD
View
15 more retailers have this diamond
Prices start from $1,320 USDSave up to $2,153 USD

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
$1,320 USD