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Cushion|Lab Grown|IGI

1.50ct F IF Cushion Lab Grown Diamond

ID • F/IF • IGI LG818683709

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG818683709

Diamond specifications and retailer prices

From $699 AUD
As of November 6, 2026
Save $2,300 AUD (77%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,998 AUD at Brilliant Earth · As of November 6, 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 F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818683709 or 818683709. Listed at 10 retailers as of November 6, 2026, with prices from $699 to $2,998, a $2,300 spread on the same certified stone. Brilliant Earth lists it at $2,998. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.50
Carat
F
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.1°
Pavilion angle36.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818683709
Dimensions7.26 × 6.19 × 4.07 mm
L/W Ratio1.17
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.26 mm6.19 mm1.50 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818683709
Side View
Table 64.0%Crown 40.1°Girdle: STK-THKPavilion 36.8°Culet: NoneDepth 65.8%

Caratlytics Score

How it works →
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: Nov 6
Current: $2,998 AUD|Low: $699 AUD|High: $5,225 AUD|Avg: $2,567 AUD|-42.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 6$699 AUD
Retailer 2$847 AUD
Retailer 3$911 AUD
Retailer 8$1,439 AUD
Retailer 9$1,744 AUD
Retailer 4$2,078 AUD
Retailer 7$2,102 AUD
Retailer 10$2,176 AUD
Retailer 5$2,496 AUD
Brilliant Earth$2,998 AUD

45 data points across 10 retailers

10 retailers$699 AUD to $2,998 AUD

A
Cheapest Retailer
-
$699 AUD
A
Retailer 2
-
$847 AUD
View
A
Retailer 3
-
$911 AUD
View
A
Retailer 4
-
$1,439 AUD
View
A
Retailer 5
-
$1,744 AUD
View
A
Retailer 6
-
$2,078 AUD
View
Retailer 7
-
$2,102 AUD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$2,176 AUD
View
B+
Retailer 9
-
$2,496 AUD
View
Most Expensive
B+
Brilliant Earth
22200346A · Nov 6
$2,998 AUD
$2,060 USD
View
9 more retailers have this diamond
Prices start from $699 AUDSave up to $2,300 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
$699 AUD