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1.03ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 648418582

Shape and cutting style on the report: Round brilliant

Certificate IGI 648418582

Diamond specifications and retailer prices

From $1,558 SGD
As of November 4, 2026
Save $2,543 SGD (62%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,101 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 648418582. Listed at 15 retailers as of November 4, 2026, with prices from $1,558 to $4,101, a $2,543 spread on the same certified stone. NZ Jewellers lists it at $4,101. 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
FluorescenceFaint
Crown angle33.7°
Pavilion angle41.6°
OriginNatural
Grading LabIGI
CertificateIGI 648418582
Dimensions6.49 × 6.44 × 4.02 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
6.49 mm6.44 mm1.03 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 648418582
Side View
Table 57.0%Crown 33.7°Girdle: MediumPavilion 41.6°Culet: NoneDepth 62.3%

Caratlytics Score

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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 4
Current: $1,608 SGD|Low: $1,558 SGD|High: $3,117 SGD|Avg: $1,954 SGD|-1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8$1,558 SGD
Retailer 6$1,590 SGD
Retailer 1$1,608 SGD
Retailer 9$1,759 SGD
Retailer 7$1,827 SGD
Retailer 2$1,922 SGD
Retailer 4$2,051 SGD
Retailer 3$2,054 SGD
Retailer 5$3,072 SGD

41 data points across 9 retailers

15 retailers$1,558 SGD to $4,101 SGD

A
Cheapest Retailer
-
$1,558 SGD
A
Retailer 2
-
$1,590 SGD
View
A
Retailer 3
-
$1,608 SGD
View
A
Retailer 4
-
$1,658 SGD
View
Retailer 5
-
$1,682 SGD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$1,682 SGD
View
A
Retailer 7
-
$1,759 SGD
View
A
Retailer 8
-
$1,827 SGD
View
A
Retailer 9
-
$1,853 SGD
View
A
Retailer 10
-
$1,922 SGD
View
B+
Retailer 11
-
$1,940 SGD
View
A
Retailer 12
-
$2,051 SGD
View
A
Retailer 13
-
$2,054 SGD
View
B
Retailer 14
-
$3,072 SGD
View
Most Expensive
B
NZ Jewellers
f45d1d6c-b963-4e77-8cbb-49c732f40dcc · Nov 5
$4,101 SGD
$3,211 USD
View
14 more retailers have this diamond
Prices start from $1,558 SGDSave up to $2,543 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
$1,558 SGD