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Cushion|Lab Grown|IGI

1.78ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG838622710

Shape and cutting style on the report: Cushion mixed cut

Certificate IGI LG838622710

Diamond specifications and retailer prices

From $2,075 USD
As of October 28, 2026
2 retailers carry this diamond
Most expensive: $3,614 USD at Brilliance · As of October 5, 2026
View at Brilliance

About this 1.78ct lab-grown cushion diamond

This 1.78ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG838622710 or 838622710. Listed at 2 retailers as of October 28, 2026. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle51.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG838622710
Dimensions8.19 × 5.77 × 3.75 mm
L/W Ratio1.42
Girdle conditionFaceted
Culet sizeLarge
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
8.19 mm5.77 mm1.78 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG838622710
Side View
Table 67.0%Crown 35.7°Girdle: MED-STKPavilion 51.5°Culet: LargeDepth 65.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 28
Current: $3,614 USD|Low: $2,075 USD|High: $3,614 USD|Avg: $3,101 USD
Brilliance
Retailer 2
October 4, 2026
Retailer 2$2,075 USD
Brilliance$3,614 USD

2 data points across 2 retailers

2 retailers

B+
Cheapest Retailer
-
$2,075 USD
Most Expensive
Brilliance
D45626333 · Oct 5
$3,614 USD
View
Price last confirmed 25 days ago
1 more retailer has this diamond
Prices start from $2,075 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.

B+
1.78ct Cushion
$2,075 USD