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Cushion|Natural|GIA

1.50ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 6541605256

Certificate GIA 6541605256

Diamond specifications and retailer prices

From $4,292 AUD
HK$23,500 HKD
As of November 2, 2026
Save $4,955 AUD (54%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $9,247 AUD at MOH London · As of November 2, 2026
View at MOH London

About this 1.5ct natural cushion diamond

This 1.5ct natural cushion sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6541605256. Listed at 22 retailers as of November 2, 2026, with prices from $4,292 to $9,247, a $4,955 spread on the same certified stone. MOH London lists it at $9,247. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle39°
OriginNatural
Grading LabGIA
CertificateGIA 6541605256
Dimensions6.78 × 6.57 × 4.38 mm
L/W Ratio1.03
Top View
6.78 mm6.57 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6541605256
Side View
Table 66.0%CrownGirdle: THK-VTKPavilion 39°Culet: NoneDepth 66.7%

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 2
Current: $9,247 AUD|Low: $4,219 AUD|High: $9,247 AUD|Avg: $5,548 AUD|+0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 2, 2026
Retailer 13$4,292 AUD
Retailer 3$4,302 AUD
Retailer 19$4,529 AUD
Retailer 6$4,593 AUD
Retailer 17$4,623 AUD
Retailer 10$4,787 AUD
Retailer 4$4,864 AUD
Retailer 9$4,881 AUD
Retailer 16$5,166 AUD
Retailer 14$5,247 AUD
Retailer 2$5,251 AUD
Retailer 11$5,423 AUD
Retailer 7$5,542 AUD
Retailer 18$5,657 AUD
Retailer 12$5,680 AUD
Retailer 15$6,472 AUD
Retailer 5$6,742 AUD
Retailer 8$8,900 AUD
MOH London$9,247 AUD

19 data points across 19 retailers

22 retailers$4,292 AUD to $9,247 AUD

A
Cheapest Retailer
-
$4,292 AUD
HK$23,500 HKD
A
Retailer 2
-
$4,302 AUD
$3,015 USD
View
A
Retailer 3
-
$4,529 AUD
$3,174 USD
View
A
Retailer 4
-
$4,593 AUD
$3,219 USD
View
A
Retailer 5
-
$4,623 AUD
$3,240 USD
View
Final sale: no returns
A
Retailer 6
-
$4,787 AUD
$3,355 USD
View
A
Retailer 7
-
$4,864 AUD
€3,246 EUR
View
A
Retailer 8
-
$4,881 AUD
$3,421 USD
View
A
Retailer 9
-
$5,166 AUD
$3,620 USD
View
A
Retailer 10
-
$5,247 AUD
£2,895 GBP
View
A
Retailer 11
-
$5,251 AUD
$3,680 USD
View
A
Retailer 12
-
$5,423 AUD
SGD 5,136 SGD
View
Retailer 13
-
$5,542 AUD
$3,884 USD
View
Price last confirmed 13 days ago
Retailer 14
-
$5,635 AUD
$3,949 USD
View
Price last confirmed 12 days ago
A
Retailer 15
-
$5,657 AUD
£3,121 GBP
View
A
Retailer 16
-
$5,680 AUD
$3,981 USD
View
A
Retailer 17
-
$5,943 AUD
View
Retailer 18
-
$6,022 AUD
View
Price last confirmed 24 days ago
B+
Retailer 19
-
$6,472 AUD
€4,320 EUR
View
B+
Retailer 20
-
$6,742 AUD
ZAR 76,327 ZAR
View
Retailer 21
-
$8,900 AUD
$6,237 USD
View
Price last confirmed 9 days ago
Most Expensive
B+
MOH London
8B8AE58D9 · Nov 2
$9,247 AUD
£5,103 GBP
View
21 more retailers have this diamond
Prices start from $4,292 AUDSave up to $4,955 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
$4,292 AUD