Cushion|Lab Grown|IGI

1.50ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG756588182

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG756588182

Diamond specifications and retailer prices

From $354 USD
As of October 30, 2026
Save $2,456 USD (87%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,810 USD at Brilliant Earth · As of October 30, 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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG756588182 or 756588182. Listed at 15 retailers as of October 30, 2026, with prices from $354 to $2,810, a $2,456 spread on the same certified stone. Brilliant Earth lists it at $2,810. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.50
Carat
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG756588182
Dimensions6.57 × 6.39 × 4.22 mm
L/W Ratio1.03
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
6.57 mm6.39 mm1.50 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG756588182
Side View
Table 64.0%Crown 34.4°Girdle: STK-THKPavilion 38.2°Culet: NoneDepth 66.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $2,810 USD|Low: $286 USD|High: $3,430 USD|Avg: $1,313 USD|-18.1%
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
October 31, 2026
Retailer 14$354 USD
Retailer 9$451 USD
Retailer 3$495 USD
Retailer 6$537 USD
Retailer 5$566 USD
Retailer 10$643 USD
Retailer 2$722 USD
Retailer 11$986 USD
Retailer 8$1,057 USD
Retailer 7$1,292 USD
Retailer 13$1,488 USD
Retailer 15$1,761 USD
Retailer 4$2,485 USD
Retailer 12$2,760 USD
Brilliant Earth$2,810 USD

41 data points across 15 retailers

15 retailers$354 USD to $2,810 USD

A
Cheapest Retailer
-
$354 USD
Final sale: no returns
A
Retailer 2
-
$451 USD
£355 GBP
View
A
Retailer 3
-
$495 USD
View
A
Retailer 4
-
$537 USD
View
A
Retailer 5
-
$566 USD
View
A
Retailer 6
-
$643 USD
View
A
Retailer 7
-
$722 USD
€688 EUR
View
A
Retailer 8
-
$986 USD
A$1,517 AUD
View
A
Retailer 9
-
$1,057 USD
View
A
Retailer 10
-
$1,292 USD
View
B+
Retailer 11
-
$1,488 USD
View
B+
Retailer 12
-
$1,761 USD
£1,387 GBP
View
Retailer 13
-
$2,485 USD
View
Price last confirmed 12 days ago
B
Retailer 14
-
$2,760 USD
View
Most Expensive
B
Brilliant Earth
21411913Y · Oct 30
$2,810 USD
View
14 more retailers have this diamond
Prices start from $354 USDSave up to $2,456 USD

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
$354 USD