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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 £571 GBP
As of October 30, 2026
Save £2,183 GBP (79%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,754 GBP 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 £571 to £2,754, a £2,183 spread on the same certified stone. Brilliant Earth lists it at £2,754. 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
Colour
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: £2,754 GBP|Low: £571 GBP|High: £5,689 GBP|Avg: £2,118 GBP|-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 6£571 GBP
Retailer 7£827 GBP
Retailer 9£881 GBP
Retailer 2£1,103 GBP
Retailer 4£1,474 GBP
Retailer 3£1,795 GBP
Retailer 5£1,974 GBP
Retailer 10£2,254 GBP
Retailer 8£2,673 GBP
Brilliant Earth£2,754 GBP

11 data points across 10 retailers

10 retailers£571 GBP to £2,754 GBP

A
Cheapest Retailer
-
£571 GBP
A
Retailer 2
-
£827 GBP
$1,108 USD
View
A
Retailer 3
-
£881 GBP
$1,180 USD
View
A
Retailer 4
-
£1,103 GBP
$1,478 USD
View
B+
Retailer 5
-
£1,474 GBP
€1,881 EUR
View
B+
Retailer 6
-
£1,795 GBP
$2,405 USD
View
B+
Retailer 7
-
£1,974 GBP
$2,645 USD
View
Retailer 8
-
£2,254 GBP
$3,020 USD
View
Price last confirmed 11 days ago
B
Retailer 9
-
£2,673 GBP
View
Most Expensive
B
Brilliant Earth
22154706A · Oct 30
£2,754 GBP
$3,690 USD
View
9 more retailers have this diamond
Prices start from £571 GBPSave up to £2,183 GBP

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
£571 GBP