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Cushion|Natural|GIA

1.50ct G SI2 Cushion Natural Diamond

EX • G/SI2 • GIA 1558532286

Certificate GIA 1558532286

Diamond specifications and retailer prices

From $6,315 AUD
As of November 6, 2026
Save $6,057 AUD (49%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $13,789 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 1558532286. Listed at 15 retailers as of November 4, 2026, with a 96% 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 1558532286
Dimensions7.85 × 5.82 × 4.00 mm
L/W Ratio1.35
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
7.85 mm5.82 mm1.50 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1558532286
Side View
Table 65.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.7%

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: $13,789 AUD|Low: $6,258 AUD|High: $13,872 AUD|Avg: $8,873 AUD|+2.1%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9$6,315 AUD
Retailer 2$6,654 AUD
Retailer 7$7,468 AUD
Retailer 11$7,772 AUD
Retailer 4$8,114 AUD
Retailer 6$8,134 AUD
Retailer 3$8,647 AUD
Retailer 10$8,831 AUD
Retailer 5$9,149 AUD
Retailer 8$12,372 AUD
Queensmith$13,789 AUD

26 data points across 11 retailers

15 retailers$6,315 AUD to $12,372 AUD

A
Cheapest Retailer
-
$6,315 AUD
A
Retailer 2
-
$6,654 AUD
View
A
Retailer 3
-
$7,468 AUD
View
B+
Retailer 4
-
$7,724 AUD
View
B+
Retailer 5
-
$7,772 AUD
View
Final sale: no returns
Retailer 6
-
$8,072 AUD
View
Price last confirmed 24 days ago
B+
Retailer 7
-
$8,114 AUD
View
B+
Retailer 8
-
$8,134 AUD
View
B+
Retailer 9
-
$8,370 AUD
View
Retailer 10
-
$8,465 AUD
View
Price last confirmed 22 days ago
B+
Retailer 11
-
$8,647 AUD
View
B+
Retailer 12
-
$8,831 AUD
View
B+
Retailer 13
-
$9,149 AUD
View
B
Retailer 14
-
$12,372 AUD
View
Most Expensive
Queensmith
1558532286 · Oct 28
$13,789 AUD
£7,460 GBP
View
Price last confirmed 9 days ago
14 more retailers have this diamond
Prices start from $6,315 AUDSave up to $6,057 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
$6,315 AUD