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Cushion|Natural|GIA

1.50ct G SI2 Cushion Natural Diamond

EX • G/SI2 • GIA 2546450390

Certificate GIA 2546450390

Diamond specifications and retailer prices

From $5,496 AUD
As of November 6, 2026
Save $6,052 AUD (52%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $12,874 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 G 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 2546450390. Listed at 15 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
G
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2546450390
Dimensions7.72 × 5.96 × 3.91 mm
L/W Ratio1.30
Top View
7.72 mm5.96 mm1.50 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2546450390
Side View
Table 70.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 65.6%

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: $12,874 AUD|Low: $5,496 AUD|High: $12,929 AUD|Avg: $7,746 AUD|+1.3%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 11$5,496 AUD
Retailer 2$5,826 AUD
Retailer 5$6,481 AUD
Retailer 8$6,673 AUD
Retailer 13$6,709 AUD
Retailer 4$7,043 AUD
Retailer 7$7,158 AUD
Retailer 3$7,313 AUD
Retailer 10$7,350 AUD
Retailer 12$7,489 AUD
Retailer 6$8,179 AUD
Retailer 9$11,547 AUD
Queensmith$12,874 AUD

31 data points across 13 retailers

15 retailers$5,496 AUD to $11,547 AUD

A
Cheapest Retailer
-
$5,496 AUD
A
Retailer 2
-
$5,826 AUD
View
A
Retailer 3
-
$6,481 AUD
View
A
Retailer 4
-
$6,673 AUD
View
A
Retailer 5
-
$6,709 AUD
View
Final sale: no returns
A
Retailer 6
-
$6,902 AUD
View
Retailer 7
-
$7,043 AUD
View
Price last confirmed 12 days ago
A
Retailer 8
-
$7,158 AUD
View
Retailer 9
-
$7,313 AUD
View
Price last confirmed 22 days ago
A
Retailer 10
-
$7,350 AUD
View
A
Retailer 11
-
$7,489 AUD
View
B+
Retailer 12
-
$8,011 AUD
View
B+
Retailer 13
-
$8,179 AUD
View
B+
Retailer 14
-
$11,547 AUD
View
Most Expensive
Queensmith
2546450390 · Oct 28
$12,874 AUD
£6,965 GBP
View
Price last confirmed 9 days ago
14 more retailers have this diamond
Prices start from $5,496 AUDSave up to $6,052 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
$5,496 AUD