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1.51ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 6552492309

Certificate GIA 6552492309

Diamond specifications and retailer prices

From $3,186 SGD
As of November 6, 2026
Save $4,077 SGD (56%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $7,263 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 GIA 6552492309. Listed at 9 retailers as of November 5, 2026, with prices from $3,186 to $7,263, a $4,077 spread on the same certified stone. NZ Jewellers lists it at $7,263. 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 angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6552492309
Dimensions7.26 × 7.31 × 4.57 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Top View
7.26 mm7.31 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552492309
Side View
Table 57.0%Crown 35.5°Girdle: MediumPavilion 41°Culet: NoneDepth 62.8%

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 6
Current: $7,263 SGD|Low: $3,186 SGD|High: $7,618 SGD|Avg: $5,105 SGD|-4.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 2$3,186 SGD
Retailer 7$3,702 SGD
Retailer 9$3,997 SGD
Retailer 6$4,261 SGD
Retailer 4$4,352 SGD
Retailer 5$4,625 SGD
Retailer 3$5,503 SGD
Retailer 8$6,952 SGD
NZ Jewellers$7,263 SGD

27 data points across 9 retailers

9 retailers$3,186 SGD to $7,263 SGD

A
Cheapest Retailer
-
$3,186 SGD
A
Retailer 2
-
$3,702 SGD
View
A
Retailer 3
-
$3,997 SGD
View
A
Retailer 4
-
$4,261 SGD
View
A
Retailer 5
-
$4,352 SGD
View
A
Retailer 6
-
$4,625 SGD
View
B+
Retailer 7
-
$5,503 SGD
View
B
Retailer 8
-
$6,952 SGD
View
Most Expensive
B
NZ Jewellers
c02d01b1-3c8c-493e-970d-669c53f3e4b1 · Nov 5
$7,263 SGD
$5,686 USD
View
8 more retailers have this diamond
Prices start from $3,186 SGDSave up to $4,077 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
$3,186 SGD