Cushion|Lab Grown|IGI

1.38ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG840629762

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG840629762

Diamond specifications and retailer prices

From $516 USD
As of October 30, 2026
Save $2,914 USD (85%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,430 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.38ct lab-grown cushion diamond

This 1.38ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840629762 or 840629762. Listed at 13 retailers as of October 30, 2026, with prices from $516 to $3,430, a $2,914 spread on the same certified stone. Brilliant Earth lists it at $3,430. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.38
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle36.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840629762
Dimensions8.02 × 5.51 × 3.86 mm
L/W Ratio1.46
Girdle conditionFaceted
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
8.02 mm5.51 mm1.38 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840629762
Side View
Table 62.0%Crown 35.7°Girdle: STK-THKPavilion 36.5°Culet: NoneDepth 70.1%

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: $3,430 USD|Low: $516 USD|High: $3,430 USD|Avg: $1,306 USD
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
October 31, 2026
Retailer 12$516 USD
Retailer 7$569 USD
Retailer 6$835 USD
Retailer 4$866 USD
Retailer 2$912 USD
Retailer 8$926 USD
Retailer 10$947 USD
Retailer 11$1,037 USD
Retailer 5$1,805 USD
Retailer 3$1,913 USD
Retailer 9$2,036 USD
Retailer 13$2,606 USD
Brilliant Earth$3,430 USD

6 data points across 13 retailers

13 retailers$516 USD to $3,430 USD

A
Cheapest Retailer
-
$516 USD
Final sale: no returns
A
Retailer 2
-
$569 USD
£448 GBP
View
A
Retailer 3
-
$835 USD
View
A
Retailer 4
-
$866 USD
View
A
Retailer 5
-
$912 USD
£718 GBP
View
A
Retailer 6
-
$926 USD
€882 EUR
View
A
Retailer 7
-
$947 USD
ZAR 15,306 ZAR
View
A
Retailer 8
-
$1,037 USD
View
B+
Retailer 9
-
$1,805 USD
View
B+
Retailer 10
-
$1,913 USD
SGD 2,585 SGD
View
B
Retailer 11
-
$2,036 USD
£1,603 GBP
View
B
Retailer 12
-
$2,606 USD
View
Most Expensive
B
Brilliant Earth
22310847A · Oct 30
$3,430 USD
View
12 more retailers have this diamond
Prices start from $516 USDSave up to $2,914 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
1.38ct Cushion
$516 USD