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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 $1,686 SGD
As of November 5, 2026
Save $2,750 SGD (62%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $4,436 SGD 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 $1,686 to $4,436, a $2,750 spread on the same certified stone. NZ Jewellers lists it at $4,436. 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: $1,715 SGD|Low: $1,714 SGD|High: $3,371 SGD|Avg: $2,464 SGD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 1$1,715 SGD
Retailer 2$2,030 SGD
Retailer 4$2,219 SGD
Retailer 7$2,488 SGD
Retailer 3$2,518 SGD
Retailer 6$2,523 SGD
Retailer 8$2,962 SGD
Retailer 5$3,321 SGD

34 data points across 8 retailers

16 retailers$1,686 SGD to $4,436 SGD

A
Cheapest Retailer
-
$1,686 SGD
A
Retailer 2
-
$1,715 SGD
View
A
Retailer 3
-
$1,819 SGD
View
A
Retailer 4
-
$1,902 SGD
View
A
Retailer 5
-
$1,948 SGD
View
A
Retailer 6
-
$1,991 SGD
View
A
Retailer 7
-
$2,030 SGD
View
B+
Retailer 8
-
$2,099 SGD
View
B+
Retailer 9
-
$2,219 SGD
View
B+
Retailer 10
-
$2,488 SGD
View
B+
Retailer 11
-
$2,518 SGD
View
B+
Retailer 12
-
$2,523 SGD
View
B+
Retailer 13
-
$2,962 SGD
View
B
Retailer 14
-
$3,044 SGD
View
B
Retailer 15
-
$3,321 SGD
View
Most Expensive
B
NZ Jewellers
d73b867d-c73d-4f10-9083-f3f8b6bc4ade · Nov 5
$4,436 SGD
$3,473 USD
View
15 more retailers have this diamond
Prices start from $1,686 SGDSave up to $2,750 SGD

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
$1,686 SGD