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Cushion|Natural|GIA

1.50ct E SI2 Cushion Natural Diamond

EX • E/SI2 • GIA 1543643600

Certificate GIA 1543643600

Diamond specifications and retailer prices

From $6,766 AUD
$4,753 USD
As of October 30, 2026
Save $6,595 AUD (49%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $13,361 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 1543643600. Listed at 15 retailers as of October 28, 2026, with prices from $6,766 to $13,361, a $6,595 spread on the same certified stone. Queensmith lists it at $13,361. 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
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1543643600
Dimensions7.50 × 5.83 × 4.07 mm
L/W Ratio1.29
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Indented Natural, Cavity, Needle, Natural
Top View
7.50 mm5.83 mm1.50 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1543643600
Side View
Table 62.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 69.8%

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: Oct 30
Current: $13,361 AUD|Low: $6,766 AUD|High: $13,460 AUD|Avg: $8,905 AUD|+2.0%
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
October 31, 2026
Retailer 11$6,766 AUD
Retailer 4$7,258 AUD
Retailer 5$7,376 AUD
Retailer 7$7,648 AUD
Retailer 10$7,740 AUD
Retailer 6$7,895 AUD
Retailer 3$8,243 AUD
Retailer 12$8,243 AUD
Retailer 13$8,527 AUD
Retailer 9$8,929 AUD
Retailer 2$9,159 AUD
Retailer 8$12,958 AUD
Queensmith$13,361 AUD

33 data points across 13 retailers

15 retailers$6,766 AUD to $13,361 AUD

A
Cheapest Retailer
-
$6,766 AUD
$4,753 USD
Final sale: no returns
A
Retailer 2
-
$7,258 AUD
$5,098 USD
View
Retailer 3
-
$7,376 AUD
$5,181 USD
View
Price last confirmed 15 days ago
A
Retailer 4
-
$7,504 AUD
$5,271 USD
View
A
Retailer 5
-
$7,648 AUD
£4,230 GBP
View
A
Retailer 6
-
$7,740 AUD
$5,437 USD
View
A
Retailer 7
-
$7,895 AUD
£4,367 GBP
View
A
Retailer 8
-
$8,243 AUD
$5,790 USD
View
A
Retailer 9
-
$8,243 AUD
$5,790 USD
View
B+
Retailer 10
-
$8,527 AUD
$5,990 USD
View
B+
Retailer 11
-
$8,780 AUD
View
Retailer 12
-
$8,929 AUD
$6,272 USD
View
Price last confirmed 8 days ago
B+
Retailer 13
-
$9,159 AUD
€6,127 EUR
View
B
Retailer 14
-
$12,958 AUD
£7,167 GBP
View
Most Expensive
B
Queensmith
1543643600 · Oct 28
$13,361 AUD
£7,390 GBP
View
14 more retailers have this diamond
Prices start from $6,766 AUDSave up to $6,595 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
$6,766 AUD