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1.51ct K SI2 Round Natural Diamond

EX • K/SI2 • IGI 648418562

Shape and cutting style on the report: Round brilliant

Certificate IGI 648418562

Diamond specifications and retailer prices

From $2,481 SGD
As of November 6, 2026
Save $4,794 SGD (66%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $7,274 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 648418562. Listed at 13 retailers as of November 5, 2026, with prices from $2,481 to $7,274, a $4,794 spread on the same certified stone. NZ Jewellers lists it at $7,274. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 648418562
Dimensions7.47 × 7.42 × 4.46 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
7.47 mm7.42 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 648418562
Side View
Table 58.0%Crown 33.4°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.0%

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 6
Current: $2,481 SGD|Low: $2,481 SGD|High: $6,168 SGD|Avg: $3,768 SGD|-2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 1$2,481 SGD
Retailer 6$3,115 SGD
Retailer 5$3,164 SGD
Retailer 7$3,174 SGD
Retailer 3$3,819 SGD
Retailer 2$4,592 SGD
Retailer 4$6,079 SGD

38 data points across 7 retailers

13 retailers$2,481 SGD to $7,274 SGD

A
Cheapest Retailer
-
$2,481 SGD
B+
Retailer 2
-
$3,115 SGD
View
A
Retailer 3
-
$3,164 SGD
View
B+
Retailer 4
-
$3,174 SGD
View
B+
Retailer 5
-
$3,479 SGD
View
Retailer 6
-
$3,479 SGD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$3,613 SGD
View
B+
Retailer 8
-
$3,659 SGD
View
A
Retailer 9
-
$3,819 SGD
View
B+
Retailer 10
-
$4,015 SGD
View
B+
Retailer 11
-
$4,592 SGD
View
B+
Retailer 12
-
$6,079 SGD
View
Most Expensive
B
NZ Jewellers
16172003-4e4c-4cee-b131-80db80be7fc9 · Nov 5
$7,274 SGD
$5,695 USD
View
12 more retailers have this diamond
Prices start from $2,481 SGDSave up to $4,794 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
$2,481 SGD