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Cushion|Natural|GIA

1.51ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 3555303625

Certificate GIA 3555303625

Diamond specifications and retailer prices

From $3,469 SGD
As of November 5, 2026
Save $4,135 SGD (54%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $7,604 SGD at MOH London · As of November 4, 2026
View at MOH London

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion 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 stated by the retailer rather than the lab and certified by GIA 3555303625. Listed at 14 retailers as of November 4, 2026, with prices from $3,469 to $7,604, a $4,135 spread on the same certified stone. MOH London lists it at $7,604. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3555303625
Dimensions7.82 × 6.01 × 4.00 mm
L/W Ratio1.30
Girdle conditionFaceted
Top View
7.82 mm6.01 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555303625
Side View
Table 65.0%CrownGirdle: ThickPavilionCulet: NoneDepth 66.6%

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 5
Current: $7,604 SGD|Low: $3,469 SGD|High: $8,057 SGD|Avg: $4,852 SGD|-5.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 5$3,469 SGD
Retailer 3$3,510 SGD
Retailer 8$3,731 SGD
Retailer 10$3,799 SGD
Retailer 9$3,813 SGD
Retailer 12$4,005 SGD
Retailer 4$4,257 SGD
Retailer 13$4,684 SGD
Retailer 6$4,691 SGD
Retailer 2$5,308 SGD
Retailer 7$5,565 SGD
Retailer 11$7,181 SGD
MOH London$7,604 SGD

34 data points across 13 retailers

14 retailers$3,469 SGD to $7,604 SGD

A
Cheapest Retailer
-
$3,469 SGD
A
Retailer 2
-
$3,510 SGD
View
A
Retailer 3
-
$3,731 SGD
View
A
Retailer 4
-
$3,799 SGD
View
A
Retailer 5
-
$3,813 SGD
View
Final sale: no returns
A
Retailer 6
-
$4,005 SGD
View
A
Retailer 7
-
$4,257 SGD
View
B+
Retailer 8
-
$4,684 SGD
View
B+
Retailer 9
-
$4,691 SGD
View
B+
Retailer 10
-
$4,755 SGD
View
B+
Retailer 11
-
$5,308 SGD
View
B+
Retailer 12
-
$5,565 SGD
View
B
Retailer 13
-
$7,181 SGD
View
Most Expensive
B
MOH London
A225B3F8E · Nov 4
$7,604 SGD
£4,672 GBP
View
13 more retailers have this diamond
Prices start from $3,469 SGDSave up to $4,135 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 Cushion
$3,469 SGD