Cushion|Lab Grown|IGI

1.77ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG846662375

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG846662375

Diamond specifications and retailer prices

From $765 USD
£602 GBP
As of October 30, 2026
Save $2,925 USD (79%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,690 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.77ct lab-grown cushion diamond

This 1.77ct 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 LG846662375 or 846662375. Listed at 10 retailers as of October 30, 2026, with prices from $765 to $3,690, a $2,925 spread on the same certified stone. Brilliant Earth lists it at $3,690. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.77
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle31.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846662375
Dimensions9.20 × 6.01 × 4.03 mm
L/W Ratio1.53
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
9.20 mm6.01 mm1.77 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846662375
Side View
Table 58.0%Crown 34.1°Girdle: STK-VTKPavilion 31.9°Culet: NoneDepth 67.1%

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: Oct 30
Current: $3,690 USD|Low: $765 USD|High: $7,622 USD|Avg: $2,839 USD|-35.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 5$765 USD
Retailer 6$1,108 USD
Retailer 9$1,180 USD
Retailer 3$1,483 USD
Retailer 7$1,991 USD
Retailer 4$2,499 USD
Retailer 2$2,645 USD
Retailer 10$3,020 USD
Retailer 8$3,581 USD
Brilliant Earth$3,690 USD

11 data points across 10 retailers

10 retailers$765 USD to $3,690 USD

A
Cheapest Retailer
-
$765 USD
£602 GBP
A
Retailer 2
-
$1,108 USD
View
A
Retailer 3
-
$1,180 USD
View
A
Retailer 4
-
$1,483 USD
View
B+
Retailer 5
-
$1,991 USD
€1,896 EUR
View
B+
Retailer 6
-
$2,499 USD
View
B+
Retailer 7
-
$2,645 USD
View
Retailer 8
-
$3,020 USD
View
Price last confirmed 9 days ago
B
Retailer 9
-
$3,581 USD
£2,820 GBP
View
Most Expensive
B
Brilliant Earth
22154706A · Oct 30
$3,690 USD
View
9 more retailers have this diamond
Prices start from $765 USDSave up to $2,925 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
1.77ct Cushion
$765 USD