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Round|Natural|GIA

1.51ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 6531904444

Certificate GIA 6531904444

Diamond specifications and retailer prices

From $3,220 SGD
As of November 6, 2026
Save $4,411 SGD (58%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $7,631 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 6531904444. Listed at 14 retailers as of November 5, 2026, with prices from $3,220 to $7,631, a $4,411 spread on the same certified stone. NZ Jewellers lists it at $7,631. 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
FluorescenceFaint
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6531904444
Dimensions7.28 × 7.24 × 4.56 mm
L/W Ratio1.01
Top View
7.28 mm7.24 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6531904444
Side View
Table 57.0%Crown 36°Girdle: Slightly ThickPavilion 40.6°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: $7,631 SGD|Low: $3,188 SGD|High: $7,631 SGD|Avg: $4,809 SGD
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 12$3,220 SGD
Retailer 10$3,251 SGD
Retailer 13$3,533 SGD
Retailer 5$3,888 SGD
Retailer 14$3,960 SGD
Retailer 6$4,091 SGD
Retailer 8$4,182 SGD
Retailer 4$4,380 SGD
Retailer 2$4,485 SGD
Retailer 3$4,548 SGD
Retailer 7$5,054 SGD
Retailer 9$5,087 SGD
Retailer 15$5,883 SGD
Retailer 11$7,325 SGD
NZ Jewellers$7,631 SGD

42 data points across 15 retailers

14 retailers$3,220 SGD to $7,631 SGD

A
Cheapest Retailer
-
$3,220 SGD
A
Retailer 2
-
$3,251 SGD
View
A
Retailer 3
-
$3,533 SGD
View
A
Retailer 4
-
$3,888 SGD
View
A
Retailer 5
-
$3,960 SGD
View
A
Retailer 6
-
$4,091 SGD
View
A
Retailer 7
-
$4,182 SGD
View
Retailer 8
-
$4,380 SGD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$4,485 SGD
View
B+
Retailer 10
-
$4,548 SGD
View
B+
Retailer 11
-
$5,054 SGD
View
B+
Retailer 12
-
$5,087 SGD
View
B
Retailer 13
-
$7,325 SGD
View
Most Expensive
B
NZ Jewellers
b756b306-6707-490a-93b1-43e155f92c84 · Nov 5
$7,631 SGD
$5,974 USD
View
13 more retailers have this diamond
Prices start from $3,220 SGDSave up to $4,411 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
$3,220 SGD