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1.03ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 843680328

Shape and cutting style on the report: Round brilliant

Certificate IGI 843680328

Diamond specifications and retailer prices

From $1,341 SGD
As of November 1, 2026
Save $2,249 SGD (63%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,590 SGD at NZ Jewellers · As of November 2, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 843680328. Listed at 15 retailers as of November 1, 2026, with prices from $1,341 to $3,590, a $2,249 spread on the same certified stone. NZ Jewellers lists it at $3,590. 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 843680328
Dimensions6.43 × 6.40 × 4.05 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.43 mm6.40 mm1.03 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 843680328
Side View
Table 59.0%Crown 35.9°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.9%

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 1
Current: $1,727 SGD|Low: $1,411 SGD|High: $2,067 SGD|Avg: $1,613 SGD|-1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 4, 2026
Retailer 2$1,411 SGD
Retailer 6$1,411 SGD
Retailer 3$1,413 SGD
Retailer 9$1,473 SGD
Retailer 10$1,528 SGD
Retailer 8$1,643 SGD
Retailer 5$1,724 SGD
Retailer 1$1,727 SGD
Retailer 7$1,796 SGD
Retailer 4$2,054 SGD

16 data points across 10 retailers

15 retailers$1,341 SGD to $3,590 SGD

A
Cheapest Retailer
-
$1,341 SGD
A
Retailer 2
-
$1,411 SGD
View
A
Retailer 3
-
$1,411 SGD
View
A
Retailer 4
-
$1,413 SGD
View
A
Retailer 5
-
$1,443 SGD
View
Retailer 6
-
$1,473 SGD
View
Price last confirmed 8 days ago
Retailer 7
-
$1,473 SGD
View
Price last confirmed 8 days ago
A
Retailer 8
-
$1,528 SGD
View
Retailer 9
-
$1,529 SGD
View
Price last confirmed 8 days ago
A
Retailer 10
-
$1,643 SGD
View
B+
Retailer 11
-
$1,724 SGD
View
A
Retailer 12
-
$1,727 SGD
View
B+
Retailer 13
-
$1,796 SGD
View
A
Retailer 14
-
$2,054 SGD
View
Most Expensive
B
NZ Jewellers
a99e7a8a-d8b4-41cd-a0ea-3dc776b9a62e · Nov 2
$3,590 SGD
$2,811 USD
View
14 more retailers have this diamond
Prices start from $1,341 SGDSave up to $2,249 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
$1,341 SGD