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Cushion|Lab Grown|IGI

1.50ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG786625437

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

Certificate IGI LG786625437

Diamond specifications and retailer prices

From $459 USD
As of October 30, 2026
Save $3,681 USD (89%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $4,140 USD at Brilliant Earth · As of October 26, 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 LG786625437 or 786625437. Listed at 19 retailers as of October 26, 2026, with prices from $459 to $4,140, a $3,681 spread on the same certified stone. Brilliant Earth lists it at $4,140. 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 angle36.2°
Pavilion angle29.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786625437
Dimensions6.68 × 6.31 × 3.89 mm
L/W Ratio1.06
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.68 mm6.31 mm1.50 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786625437
Side View
Table 62.0%Crown 36.2°Girdle: STK-THKPavilion 29.9°Culet: NoneDepth 61.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $4,140 USD|Low: $459 USD|High: $4,500 USD|Avg: $1,425 USD|+20.3%
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 31, 2026
Retailer 6$459 USD
Retailer 8$509 USD
Retailer 3$770 USD
Retailer 7$806 USD
Retailer 4$825 USD
Retailer 2$839 USD
Retailer 14$854 USD
Retailer 16$867 USD
Retailer 5$1,036 USD
Retailer 10$1,188 USD
Retailer 9$1,478 USD
Retailer 13$1,673 USD
Retailer 12$1,867 USD
Retailer 11$1,908 USD
Retailer 17$2,000 USD
Retailer 15$2,595 USD
Brilliant Earth$4,140 USD

43 data points across 17 retailers

19 retailers$459 USD to $4,140 USD

A
Cheapest Retailer
-
$459 USD
Final sale: no returns
Retailer 2
-
$509 USD
View
Price last confirmed 15 days ago
A
Retailer 3
-
$770 USD
View
A
Retailer 4
-
$806 USD
View
Retailer 5
-
$825 USD
View
Price last confirmed 7 days ago
A
Retailer 6
-
$839 USD
£660 GBP
View
A
Retailer 7
-
$854 USD
€813 EUR
View
Retailer 8
-
$867 USD
ZAR 14,008 ZAR
View
Price last confirmed 12 days ago
A
Retailer 9
-
$1,032 USD
A$1,588 AUD
View
A
Retailer 10
-
$1,036 USD
View
A
Retailer 11
-
$1,188 USD
A$1,827 AUD
View
Retailer 12
-
$1,478 USD
£1,164 GBP
View
Price last confirmed 9 days ago
B+
Retailer 13
-
$1,673 USD
View
B+
Retailer 14
-
$1,774 USD
View
B+
Retailer 15
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$1,867 USD
View
B+
Retailer 16
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$1,908 USD
View
Retailer 17
-
$2,000 USD
£1,575 GBP
View
Price last confirmed 10 days ago
Retailer 18
-
$2,595 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
20914900A · Oct 26
$4,140 USD
View
18 more retailers have this diamond
Prices start from $459 USDSave up to $3,681 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
$459 USD