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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 $1,957 SGD
As of November 5, 2026
Save $3,279 SGD (63%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $5,236 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 825677309. Listed at 14 retailers as of November 5, 2026, with prices from $1,957 to $5,236, a $3,279 spread on the same certified stone. NZ Jewellers lists it at $5,236. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $2,026 SGD|Low: $1,980 SGD|High: $3,805 SGD|Avg: $2,604 SGD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 7$1,980 SGD
Retailer 1$2,026 SGD
Retailer 2$2,409 SGD
Retailer 3$2,497 SGD
Retailer 5$2,620 SGD
Retailer 4$2,908 SGD
Retailer 6$3,750 SGD

34 data points across 7 retailers

14 retailers$1,957 SGD to $5,236 SGD

A
Cheapest Retailer
-
$1,957 SGD
A
Retailer 2
-
$1,980 SGD
View
Final sale: no returns
A
Retailer 3
-
$2,026 SGD
View
Retailer 4
-
$2,147 SGD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$2,147 SGD
View
A
Retailer 6
-
$2,235 SGD
View
B+
Retailer 7
-
$2,245 SGD
View
B+
Retailer 8
-
$2,409 SGD
View
B+
Retailer 9
-
$2,477 SGD
View
B+
Retailer 10
-
$2,497 SGD
View
B+
Retailer 11
-
$2,620 SGD
View
B+
Retailer 12
-
$2,908 SGD
View
B
Retailer 13
-
$3,750 SGD
View
Most Expensive
B
NZ Jewellers
e61d0523-7643-42e5-af4a-3b1fe5f5a3ac · Nov 5
$5,236 SGD
$4,099 USD
View
13 more retailers have this diamond
Prices start from $1,957 SGDSave up to $3,279 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
$1,957 SGD