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1.51ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 623473316

Shape and cutting style on the report: Round brilliant

Certificate IGI 623473316

Diamond specifications and retailer prices

From $2,696 SGD
As of November 6, 2026
Save $3,546 SGD (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,242 SGD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 623473316. Listed at 15 retailers as of November 5, 2026, with prices from $2,696 to $6,242, a $3,546 spread on the same certified stone. NZ Jewellers lists it at $6,242. 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

1.51
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 623473316
Dimensions7.48 × 7.44 × 4.51 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
7.48 mm7.44 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 623473316
Side View
Table 58.0%Crown 33.4°Girdle: MediumPavilion 41.1°Culet: NoneDepth 60.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $6,242 SGD|Low: $2,696 SGD|High: $6,494 SGD|Avg: $3,549 SGD|-3.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 7$2,696 SGD
Retailer 10$2,727 SGD
Retailer 3$2,839 SGD
Retailer 6$2,982 SGD
Retailer 4$2,985 SGD
Retailer 5$2,985 SGD
Retailer 13$3,123 SGD
Retailer 11$3,164 SGD
Retailer 2$3,251 SGD
Retailer 8$3,281 SGD
Retailer 14$3,445 SGD
Retailer 9$3,644 SGD
Retailer 12$3,714 SGD
Retailer 15$5,228 SGD
NZ Jewellers$6,242 SGD

22 data points across 15 retailers

15 retailers$2,696 SGD to $6,242 SGD

A
Cheapest Retailer
-
$2,696 SGD
A
Retailer 2
-
$2,727 SGD
View
A
Retailer 3
-
$2,839 SGD
View
A
Retailer 4
-
$2,982 SGD
View
Retailer 5
-
$2,985 SGD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$2,985 SGD
View
A
Retailer 7
-
$3,123 SGD
View
A
Retailer 8
-
$3,164 SGD
View
A
Retailer 9
-
$3,251 SGD
View
A
Retailer 10
-
$3,281 SGD
View
A
Retailer 11
-
$3,445 SGD
View
A
Retailer 12
-
$3,644 SGD
View
A
Retailer 13
-
$3,714 SGD
View
B+
Retailer 14
-
$5,228 SGD
View
Most Expensive
B
NZ Jewellers
64f18f7e-053e-4677-856d-c596d1f2dd3e · Nov 5
$6,242 SGD
$4,887 USD
View
14 more retailers have this diamond
Prices start from $2,696 SGDSave up to $3,546 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
1.51ct Round
$2,696 SGD