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Cushion|Natural|GIA

1.50ct E SI2 Cushion Natural Diamond

EX • E/SI2 • GIA 2558095014

Certificate GIA 2558095014

Diamond specifications and retailer prices

From $5,197 AUD
As of November 6, 2026
Save $5,724 AUD (52%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $12,513 AUD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.5ct natural cushion diamond

This 1.5ct natural cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2558095014. Listed at 14 retailers as of November 4, 2026, with a 110% 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
E
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2558095014
Dimensions8.54 × 5.22 × 3.61 mm
L/W Ratio1.64
Top View
8.54 mm5.22 mm1.50 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2558095014
Side View
Table 62.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 69.2%

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 6
Current: $12,513 AUD|Low: $5,159 AUD|High: $12,661 AUD|Avg: $7,517 AUD|+1.7%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 10$5,197 AUD
Retailer 2$5,539 AUD
Retailer 8$6,167 AUD
Retailer 11$6,347 AUD
Retailer 6$6,616 AUD
Retailer 7$6,771 AUD
Retailer 3$6,877 AUD
Retailer 12$7,015 AUD
Retailer 4$7,095 AUD
Retailer 5$7,737 AUD
Retailer 9$10,921 AUD
Queensmith$12,513 AUD

28 data points across 12 retailers

14 retailers$5,197 AUD to $10,921 AUD

A
Cheapest Retailer
-
$5,197 AUD
A
Retailer 2
-
$5,539 AUD
View
A
Retailer 3
-
$6,167 AUD
View
A
Retailer 4
-
$6,347 AUD
View
Final sale: no returns
A
Retailer 5
-
$6,376 AUD
View
A
Retailer 6
-
$6,616 AUD
View
A
Retailer 7
-
$6,771 AUD
View
Retailer 8
-
$6,877 AUD
View
Price last confirmed 8 days ago
A
Retailer 9
-
$7,015 AUD
View
A
Retailer 10
-
$7,095 AUD
View
A
Retailer 11
-
$7,111 AUD
View
A
Retailer 12
-
$7,737 AUD
View
B+
Retailer 13
-
$10,921 AUD
View
Most Expensive
Queensmith
2558095014 · Oct 28
$12,513 AUD
£6,770 GBP
View
Price last confirmed 9 days ago
13 more retailers have this diamond
Prices start from $5,197 AUDSave up to $5,724 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
$5,197 AUD