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Cushion|Lab Grown|IGI

1.50ct E IF Cushion Lab Grown Diamond

EX • E/IF • IGI LG798603812

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG798603812

Diamond specifications and retailer prices

From $692 AUD
$486 USD
As of October 30, 2026
Save $3,379 AUD (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $4,071 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.5ct lab-grown cushion diamond

This 1.5ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG798603812 or 798603812. Listed at 19 retailers as of October 29, 2026, with prices from $692 to $4,071, a $3,379 spread on the same certified stone. Brilliant Earth lists it at $4,071. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.50
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG798603812
Dimensions7.70 × 6.02 × 3.86 mm
L/W Ratio1.28
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.70 mm6.02 mm1.50 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG798603812
Side View
Table 62.0%Crown 34.4°Girdle: MED-STKPavilion 34.9°Culet: NoneDepth 64.1%

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: Oct 30
Current: $4,071 AUD|Low: $692 AUD|High: $4,313 AUD|Avg: $1,940 AUD|-5.6%
Brilliant Earth
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
October 30, 2026
Retailer 8$692 AUD
Retailer 6$767 AUD
Retailer 7$1,028 AUD
Retailer 13$1,032 AUD
Retailer 11$1,176 AUD
Retailer 16$1,213 AUD
Retailer 2$1,266 AUD
Retailer 12$1,318 AUD
Retailer 3$1,496 AUD
Retailer 10$1,786 AUD
Retailer 15$1,853 AUD
Retailer 9$2,198 AUD
Retailer 5$2,511 AUD
Retailer 17$2,764 AUD
Retailer 14$2,820 AUD
Retailer 4$2,870 AUD
Brilliant Earth$4,071 AUD

39 data points across 17 retailers

19 retailers$692 AUD to $4,071 AUD

A
Cheapest Retailer
-
$692 AUD
$486 USD
Final sale: no returns
A
Retailer 2
-
$767 AUD
$539 USD
View
A
Retailer 3
-
$1,028 AUD
$722 USD
View
A
Retailer 4
-
$1,032 AUD
$725 USD
View
A
Retailer 5
-
$1,176 AUD
€787 EUR
View
A
Retailer 6
-
$1,213 AUD
$852 USD
View
A
Retailer 7
-
$1,266 AUD
£700 GBP
View
A
Retailer 8
-
$1,318 AUD
ZAR 14,958 ZAR
View
A
Retailer 9
-
$1,496 AUD
$1,051 USD
View
A
Retailer 10
-
$1,786 AUD
View
A
Retailer 11
-
$1,853 AUD
$1,302 USD
View
Retailer 12
-
$2,198 AUD
View
Price last confirmed 22 days ago
B+
Retailer 13
-
$2,391 AUD
$1,680 USD
View
B+
Retailer 14
-
$2,511 AUD
$1,764 USD
View
B+
Retailer 15
-
$2,764 AUD
$1,942 USD
View
B+
Retailer 16
-
$2,820 AUD
£1,560 GBP
View
B+
Retailer 17
-
$2,870 AUD
$2,016 USD
View
B
Retailer 18
-
$3,959 AUD
£2,190 GBP
View
Most Expensive
B
Brilliant Earth
19012551A · Oct 29
$4,071 AUD
$2,860 USD
View
18 more retailers have this diamond
Prices start from $692 AUDSave up to $3,379 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
$692 AUD