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Cushion|Natural|GIA

1.50ct G SI2 Cushion Natural Diamond

EX • G/SI2 • GIA 6522429378

Certificate GIA 6522429378

Diamond specifications and retailer prices

From $4,192 AUD
As of November 6, 2026
Save $4,880 AUD (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $11,340 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 6522429378. Listed at 15 retailers as of November 4, 2026, with a 116% 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 6522429378
Dimensions7.93 × 5.59 × 3.76 mm
L/W Ratio1.42
Top View
7.93 mm5.59 mm1.50 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6522429378
Side View
Table 67.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 67.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $11,340 AUD|Low: $4,154 AUD|High: $11,414 AUD|Avg: $6,219 AUD|+2.5%
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 12$4,192 AUD
Retailer 2$4,449 AUD
Retailer 9$4,925 AUD
Retailer 4$5,020 AUD
Retailer 6$5,239 AUD
Retailer 8$5,280 AUD
Retailer 13$5,439 AUD
Retailer 10$5,632 AUD
Retailer 5$5,651 AUD
Retailer 3$5,820 AUD
Retailer 7$6,330 AUD
Retailer 11$9,072 AUD
Queensmith$11,340 AUD

25 data points across 13 retailers

15 retailers$4,192 AUD to $9,072 AUD

A
Cheapest Retailer
-
$4,192 AUD
A
Retailer 2
-
$4,449 AUD
View
A
Retailer 3
-
$4,925 AUD
View
A
Retailer 4
-
$5,020 AUD
View
Final sale: no returns
A
Retailer 5
-
$5,139 AUD
View
A
Retailer 6
-
$5,239 AUD
View
A
Retailer 7
-
$5,280 AUD
View
Retailer 8
-
$5,439 AUD
View
Price last confirmed 9 days ago
A
Retailer 9
-
$5,632 AUD
View
A
Retailer 10
-
$5,651 AUD
View
A
Retailer 11
-
$5,702 AUD
View
A
Retailer 12
-
$5,820 AUD
View
A
Retailer 13
-
$6,330 AUD
View
B+
Retailer 14
-
$9,072 AUD
View
Most Expensive
Queensmith
6522429378 · Oct 28
$11,340 AUD
£6,135 GBP
View
Price last confirmed 9 days ago
14 more retailers have this diamond
Prices start from $4,192 AUDSave up to $4,880 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
$4,192 AUD