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Cushion|Natural|GIA

1.50ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 1246005803

Certificate GIA 1246005803

Diamond specifications and retailer prices

From $4,919 AUD
HK$27,000 HKD
As of October 29, 2026
Save $6,153 AUD (56%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $11,072 AUD at MOH London · As of October 29, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1246005803. Listed at 19 retailers as of October 29, 2026, with prices from $4,919 to $11,072, a $6,153 spread on the same certified stone. MOH London lists it at $11,072. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1246005803
Dimensions6.86 × 6.28 × 4.32 mm
L/W Ratio1.09
Girdle conditionFaceted
Top View
6.86 mm6.28 mm1.50 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1246005803
Side View
Table 61.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 68.8%

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 29
Current: $11,072 AUD|Low: $4,919 AUD|High: $11,446 AUD|Avg: $6,701 AUD|-3.3%
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
October 29, 2026
Retailer 18$4,919 AUD
Retailer 9$5,074 AUD
Retailer 16$5,349 AUD
Retailer 17$5,668 AUD
Retailer 5$5,711 AUD
Retailer 3$5,782 AUD
Retailer 11$5,832 AUD
Retailer 6$5,936 AUD
Retailer 8$5,961 AUD
Retailer 7$6,035 AUD
Retailer 15$6,035 AUD
Retailer 2$6,238 AUD
Retailer 12$6,630 AUD
Retailer 10$7,159 AUD
Retailer 13$7,814 AUD
Retailer 14$8,346 AUD
Retailer 4$10,620 AUD
MOH London$11,072 AUD

24 data points across 18 retailers

19 retailers$4,919 AUD to $11,072 AUD

A
Cheapest Retailer
-
$4,919 AUD
HK$27,000 HKD
A
Retailer 2
-
$5,074 AUD
$3,565 USD
View
A
Retailer 3
-
$5,349 AUD
$3,758 USD
View
A
Retailer 4
-
$5,668 AUD
$3,982 USD
View
A
Retailer 5
-
$5,711 AUD
$4,012 USD
View
A
Retailer 6
-
$5,782 AUD
$4,062 USD
View
Final sale: no returns
A
Retailer 7
-
$5,832 AUD
€3,902 EUR
View
A
Retailer 8
-
$5,936 AUD
$4,170 USD
View
A
Retailer 9
-
$5,961 AUD
$4,188 USD
View
A
Retailer 10
-
$6,035 AUD
$4,240 USD
View
A
Retailer 11
-
$6,035 AUD
$4,240 USD
View
A
Retailer 12
-
$6,238 AUD
£3,451 GBP
View
A
Retailer 13
-
$6,630 AUD
$4,658 USD
View
A
Retailer 14
-
$7,159 AUD
View
Price last confirmed 19 days ago
A
Retailer 15
-
$7,492 AUD
View
A
Retailer 16
-
$7,814 AUD
€5,228 EUR
View
A
Retailer 17
-
$8,346 AUD
ZAR 94,721 ZAR
View
Price last confirmed 7 days ago
B+
Retailer 18
-
$10,620 AUD
$7,461 USD
View
Most Expensive
B+
MOH London
1FAD8C3DB · Oct 29
$11,072 AUD
£6,125 GBP
View
18 more retailers have this diamond
Prices start from $4,919 AUDSave up to $6,153 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
$4,919 AUD