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Cushion|Natural|GIA

1.50ct E SI2 Cushion Natural Diamond

ID • E/SI2 • GIA 2547128793

Certificate GIA 2547128793

Diamond specifications and retailer prices

From $5,047 AUD
As of November 6, 2026
Save $5,558 AUD (52%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $12,356 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 2547128793. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2547128793
Dimensions9.10 × 5.59 × 3.83 mm
L/W Ratio1.63
Top View
9.10 mm5.59 mm1.50 ctE / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2547128793
Side View
Table 67.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 68.6%

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: $12,356 AUD|Low: $5,011 AUD|High: $12,439 AUD|Avg: $7,437 AUD|+2.3%
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 9$5,047 AUD
Retailer 2$5,385 AUD
Retailer 7$5,989 AUD
Retailer 12$6,162 AUD
Retailer 11$6,424 AUD
Retailer 6$6,535 AUD
Retailer 10$6,677 AUD
Retailer 3$6,840 AUD
Retailer 4$6,894 AUD
Retailer 5$7,513 AUD
Retailer 8$10,605 AUD
Queensmith$12,356 AUD

31 data points across 12 retailers

14 retailers$5,047 AUD to $10,605 AUD

A
Cheapest Retailer
-
$5,047 AUD
A
Retailer 2
-
$5,385 AUD
View
A
Retailer 3
-
$5,989 AUD
View
A
Retailer 4
-
$6,162 AUD
View
Final sale: no returns
A
Retailer 5
-
$6,193 AUD
View
A
Retailer 6
-
$6,424 AUD
View
A
Retailer 7
-
$6,535 AUD
View
Retailer 8
-
$6,677 AUD
View
Price last confirmed 8 days ago
A
Retailer 9
-
$6,743 AUD
View
A
Retailer 10
-
$6,840 AUD
View
A
Retailer 11
-
$6,894 AUD
View
A
Retailer 12
-
$7,513 AUD
View
B+
Retailer 13
-
$10,605 AUD
View
Most Expensive
Queensmith
2547128793 · Oct 28
$12,356 AUD
£6,685 GBP
View
Price last confirmed 9 days ago
13 more retailers have this diamond
Prices start from $5,047 AUDSave up to $5,558 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
$5,047 AUD