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Cushion|Natural|GIA

1.50ct J SI1 Cushion Natural Diamond

GD • J/SI1 • GIA 1555139797

Certificate GIA 1555139797

Diamond specifications and retailer prices

From $3,862 SGD
HK$23,600 HKD
As of November 2, 2026
Save $4,529 SGD (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $8,391 SGD at MOH London · As of October 29, 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 1555139797. Listed at 19 retailers as of October 29, 2026, with prices from $3,862 to $8,391, a $4,529 spread on the same certified stone. MOH London lists it at $8,391. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

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

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1555139797
Dimensions7.56 × 5.80 × 4.19 mm
L/W Ratio1.30
Girdle conditionFaceted
Top View
7.56 mm5.80 mm1.50 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555139797
Side View
Table 56.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 72.3%

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 2
Current: $8,391 SGD|Low: $3,796 SGD|High: $8,391 SGD|Avg: $5,019 SGD
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 2$3,862 SGD
Retailer 3$3,863 SGD
Retailer 16$4,058 SGD
Retailer 6$4,119 SGD
Retailer 14$4,173 SGD
Retailer 9$4,353 SGD
Retailer 8$4,361 SGD
Retailer 18$4,505 SGD
Retailer 13$4,638 SGD
Retailer 17$4,653 SGD
Retailer 11$4,802 SGD
Retailer 5$5,014 SGD
Retailer 15$5,105 SGD
Retailer 10$5,420 SGD
Retailer 12$5,647 SGD
Retailer 4$6,134 SGD
Retailer 7$7,948 SGD
MOH London$8,391 SGD

26 data points across 18 retailers

19 retailers$3,862 SGD to $8,391 SGD

A
Cheapest Retailer
-
$3,862 SGD
HK$23,600 HKD
A
Retailer 2
-
$3,863 SGD
$3,022 USD
View
B+
Retailer 3
-
$4,058 SGD
$3,174 USD
View
B+
Retailer 4
-
$4,119 SGD
$3,222 USD
View
B+
Retailer 5
-
$4,173 SGD
$3,264 USD
View
Final sale: no returns
B+
Retailer 6
-
$4,353 SGD
$3,405 USD
View
B+
Retailer 7
-
$4,361 SGD
$3,411 USD
View
B+
Retailer 8
-
$4,505 SGD
A$5,422 AUD
View
B+
Retailer 9
-
$4,638 SGD
$3,628 USD
View
B+
Retailer 10
-
$4,653 SGD
$3,640 USD
View
B+
Retailer 11
-
$4,802 SGD
£2,957 GBP
View
B
Retailer 12
-
$5,014 SGD
$3,922 USD
View
B+
Retailer 13
-
$5,105 SGD
£3,144 GBP
View
B
Retailer 14
-
$5,167 SGD
A$6,218 AUD
View
Retailer 15
-
$5,420 SGD
A$6,523 AUD
View
Price last confirmed 24 days ago
B
Retailer 16
-
$5,647 SGD
€4,207 EUR
View
B
Retailer 17
-
$6,134 SGD
ZAR 77,519 ZAR
View
Retailer 18
-
$7,948 SGD
$6,217 USD
View
Price last confirmed 9 days ago
Most Expensive
C
MOH London
C27A52A0A · Oct 29
$8,391 SGD
£5,168 GBP
View
18 more retailers have this diamond
Prices start from $3,862 SGDSave up to $4,529 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
$3,862 SGD