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Cushion|Natural|GIA

1.51ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 6555299261

Certificate GIA 6555299261

Diamond specifications and retailer prices

From $3,018 SGD
As of November 5, 2026
Save $3,787 SGD (56%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $6,805 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555299261. Listed at 7 retailers as of November 4, 2026, with prices from $3,018 to $6,805, a $3,787 spread on the same certified stone. MOH London lists it at $6,805. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555299261
Dimensions7.68 × 5.91 × 4.12 mm
L/W Ratio1.30
Key to symbols
Crystal, Feather, Pinpoint, Cloud, Needle
Top View
7.68 mm5.91 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555299261
Side View
Table 65.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 69.6%

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: $6,805 SGD|Low: $3,018 SGD|High: $7,746 SGD|Avg: $4,530 SGD|-12.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 4$3,018 SGD
Retailer 6$3,480 SGD
Retailer 5$3,760 SGD
Retailer 7$3,897 SGD
Retailer 3$4,187 SGD
Retailer 2$4,896 SGD
MOH London$6,805 SGD

33 data points across 7 retailers

7 retailers$3,018 SGD to $6,805 SGD

A
Cheapest Retailer
-
$3,018 SGD
A
Retailer 2
-
$3,480 SGD
View
A
Retailer 3
-
$3,760 SGD
View
A
Retailer 4
-
$3,897 SGD
View
Final sale: no returns
A
Retailer 5
-
$4,187 SGD
View
B+
Retailer 6
-
$4,896 SGD
View
Most Expensive
B
MOH London
9F507C93D · Nov 4
$6,805 SGD
£4,181 GBP
View
6 more retailers have this diamond
Prices start from $3,018 SGDSave up to $3,787 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
$3,018 SGD