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Cushion|Natural|GIA

1.50ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 6542090181

Certificate GIA 6542090181

Diamond specifications and retailer prices

From $3,531 SGD
$2,761 USD
As of November 1, 2026
Save $4,229 SGD (54%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $7,760 SGD at MOH London · As of November 1, 2026
View at MOH London

About this 1.5ct natural cushion diamond

This 1.5ct 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 6542090181. Listed at 21 retailers as of November 1, 2026, with prices from $3,531 to $7,760, a $4,229 spread on the same certified stone. MOH London lists it at $7,760. 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

1.50
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle38.4°
OriginNatural
Grading LabGIA
CertificateGIA 6542090181
Dimensions6.59 × 6.58 × 4.33 mm
L/W Ratio1.00
Top View
6.59 mm6.58 mm1.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542090181
Side View
Table 65.0%CrownGirdle: STK-VTKPavilion 38.4°Culet: NoneDepth 65.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $7,760 SGD|Low: $3,323 SGD|High: $7,975 SGD|Avg: $4,610 SGD|-2.7%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 2, 2026
Retailer 15$3,531 SGD
Retailer 2$3,536 SGD
Retailer 7$3,744 SGD
Retailer 17$3,792 SGD
Retailer 13$3,939 SGD
Retailer 4$4,006 SGD
Retailer 18$4,067 SGD
Retailer 6$4,170 SGD
Retailer 12$4,287 SGD
Retailer 5$4,310 SGD
Retailer 8$4,523 SGD
Retailer 14$4,541 SGD
Retailer 3$4,768 SGD
Retailer 10$4,933 SGD
Retailer 11$5,515 SGD
Retailer 16$5,704 SGD
Retailer 9$6,989 SGD
MOH London$7,760 SGD

30 data points across 18 retailers

21 retailers$3,531 SGD to $7,760 SGD

A
Cheapest Retailer
-
$3,531 SGD
$2,761 USD
A
Retailer 2
-
$3,536 SGD
HK$21,600 HKD
View
A
Retailer 3
-
$3,744 SGD
$2,927 USD
View
A
Retailer 4
-
$3,792 SGD
$2,965 USD
View
B+
Retailer 5
-
$3,939 SGD
$3,080 USD
View
Final sale: no returns
A
Retailer 6
-
$4,006 SGD
$3,132 USD
View
A
Retailer 7
-
$4,067 SGD
$3,180 USD
View
B+
Retailer 8
-
$4,170 SGD
A$5,016 AUD
View
B+
Retailer 9
-
$4,287 SGD
$3,352 USD
View
B+
Retailer 10
-
$4,310 SGD
$3,370 USD
View
B+
Retailer 11
-
$4,523 SGD
View
B+
Retailer 12
-
$4,541 SGD
£2,796 GBP
View
Retailer 13
-
$4,587 SGD
$3,587 USD
View
Price last confirmed 12 days ago
B+
Retailer 14
-
$4,768 SGD
$3,728 USD
View
Retailer 15
-
$4,841 SGD
$3,785 USD
View
Price last confirmed 40 days ago
B+
Retailer 16
-
$4,861 SGD
A$5,848 AUD
View
Retailer 17
-
$4,933 SGD
A$5,935 AUD
View
Price last confirmed 24 days ago
B+
Retailer 18
-
$5,515 SGD
€4,107 EUR
View
B
Retailer 19
-
$5,704 SGD
ZAR 72,053 ZAR
View
Retailer 20
-
$6,989 SGD
$5,465 USD
View
Price last confirmed 9 days ago
Most Expensive
B
MOH London
A452D5EB4 · Nov 1
$7,760 SGD
£4,778 GBP
View
20 more retailers have this diamond
Prices start from $3,531 SGDSave up to $4,229 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
1.50ct Cushion
$3,531 SGD