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Cushion|Natural|GIA

1.51ct K SI2 Cushion Natural Diamond

EX • K/SI2 • GIA 2566006105

Certificate GIA 2566006105

Diamond specifications and retailer prices

From $2,329 SGD
As of November 6, 2026
Save $3,182 SGD (58%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $5,511 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2566006105. Listed at 7 retailers as of November 4, 2026, with prices from $2,329 to $5,511, a $3,182 spread on the same certified stone. MOH London lists it at $5,511. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2566006105
Dimensions7.52 × 5.93 × 4.11 mm
L/W Ratio1.27
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
7.52 mm5.93 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566006105
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NDepth 69.3%

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: $5,511 SGD|Low: $2,297 SGD|High: $5,593 SGD|Avg: $3,454 SGD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 6$2,329 SGD
Retailer 7$2,913 SGD
Retailer 3$3,142 SGD
Retailer 5$3,227 SGD
Retailer 2$3,258 SGD
Retailer 4$4,027 SGD
MOH London$5,511 SGD

32 data points across 7 retailers

7 retailers$2,329 SGD to $5,511 SGD

A
Cheapest Retailer
-
$2,329 SGD
B+
Retailer 2
-
$2,913 SGD
View
A
Retailer 3
-
$3,142 SGD
View
B+
Retailer 4
-
$3,227 SGD
View
B+
Retailer 5
-
$3,258 SGD
View
B+
Retailer 6
-
$4,027 SGD
View
Most Expensive
B
MOH London
051E64C1E · Nov 4
$5,511 SGD
£3,386 GBP
View
6 more retailers have this diamond
Prices start from $2,329 SGDSave up to $3,182 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
$2,329 SGD