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Cushion|Natural|GIA

1.50ct J SI2 Cushion Natural Diamond

EX • J/SI2 • GIA 2436985597

Certificate GIA 2436985597

Diamond specifications and retailer prices

From $4,270 AUD
As of November 4, 2026
Save $2,046 AUD (32%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $9,874 AUD at MOH London · As of October 8, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2436985597. Listed at 15 retailers as of November 4, 2026, with a 48% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle40.29°
Pavilion angle36.57°
OriginNatural
Grading LabGIA
CertificateGIA 2436985597
Dimensions6.40 × 6.37 × 4.38 mm
L/W Ratio1.00
Top View
6.40 mm6.37 mm1.50 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2436985597
Side View
Table 61.0%Crown 40.29°Girdle: STK-ETKPavilion 36.57°Culet: NoneDepth 68.8%

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 4
Current: $9,874 AUD|Low: $4,017 AUD|High: $9,900 AUD|Avg: $5,559 AUD|+6.2%
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 5, 2026
Retailer 12$4,270 AUD
Retailer 11$4,334 AUD
Retailer 10$4,337 AUD
Retailer 17$4,483 AUD
Retailer 7$4,704 AUD
Retailer 15$4,879 AUD
Retailer 9$5,260 AUD
Retailer 18$5,299 AUD
Retailer 5$5,302 AUD
Retailer 13$5,331 AUD
Retailer 3$5,560 AUD
Retailer 8$5,560 AUD
Retailer 6$5,749 AUD
Retailer 16$5,858 AUD
Retailer 2$6,316 AUD
Retailer 14$6,562 AUD
Retailer 4$6,621 AUD
MOH London$9,874 AUD

41 data points across 18 retailers

15 retailers$4,270 AUD to $6,316 AUD

A
Cheapest Retailer
-
$4,270 AUD
A
Retailer 2
-
$4,334 AUD
View
A
Retailer 3
-
$4,337 AUD
View
Retailer 4
-
$4,456 AUD
View
Price last confirmed 103 days ago
B+
Retailer 5
-
$4,879 AUD
View
B+
Retailer 6
-
$5,015 AUD
View
B+
Retailer 7
-
$5,260 AUD
View
Retailer 8
-
$5,299 AUD
View
Price last confirmed 30 days ago
B+
Retailer 9
-
$5,331 AUD
View
B+
Retailer 10
-
$5,560 AUD
View
B+
Retailer 11
-
$5,560 AUD
View
B+
Retailer 12
-
$5,749 AUD
View
B
Retailer 13
-
$6,316 AUD
View
Retailer 14
-
$6,621 AUD
View
Price last confirmed 30 days ago
Most Expensive
MOH London
72BB6182D · Oct 8
$9,874 AUD
£5,342 GBP
View
Price last confirmed 29 days ago
14 more retailers have this diamond
Prices start from $4,270 AUDSave up to $2,046 AUD

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
$4,270 AUD