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Cushion|Lab Grown|IGI

1.77ct D FL Cushion Lab Grown Diamond

EX • D/FL • IGI LG816630872

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG816630872

Diamond specifications and retailer prices

From £614 GBP
$823 USD
As of October 30, 2026
Save £1,902 GBP (76%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £2,517 GBP at MOH London · As of October 29, 2026
View at MOH London

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 LG816630872 or 816630872. Listed at 14 retailers as of October 29, 2026, with prices from £614 to £2,517, a £1,902 spread on the same certified stone. MOH London lists it at £2,517. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle37.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816630872
Dimensions9.24 × 6.16 × 4.04 mm
L/W Ratio1.50
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
9.24 mm6.16 mm1.77 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816630872
Side View
Table 60.0%Crown 32.7°Girdle: MED-STKPavilion 37.8°Culet: NoneDepth 65.6%

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: £2,517 GBP|Low: £614 GBP|High: £3,058 GBP|Avg: £1,544 GBP|-16.6%
MOH London
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
October 31, 2026
Retailer 14£614 GBP
Retailer 3£637 GBP
Retailer 8£787 GBP
Retailer 13£879 GBP
Retailer 2£966 GBP
Retailer 7£1,023 GBP
Retailer 11£1,033 GBP
Retailer 10£1,114 GBP
Retailer 4£1,979 GBP
Retailer 5£2,154 GBP
Retailer 12£2,168 GBP
Retailer 6£2,197 GBP
Retailer 9£2,246 GBP
MOH London£2,517 GBP

42 data points across 14 retailers

14 retailers£614 GBP to £2,517 GBP

A
Cheapest Retailer
-
£614 GBP
$823 USD
Final sale: no returns
Retailer 2
-
£637 GBP
$854 USD
View
Price last confirmed 15 days ago
A
Retailer 3
-
£787 GBP
$1,055 USD
View
A
Retailer 4
-
£879 GBP
$1,178 USD
View
A
Retailer 5
-
£966 GBP
€1,233 EUR
View
A
Retailer 6
-
£1,023 GBP
View
A
Retailer 7
-
£1,033 GBP
$1,384 USD
View
A
Retailer 8
-
£1,114 GBP
$1,492 USD
View
B+
Retailer 9
-
£1,979 GBP
View
B+
Retailer 10
-
£2,154 GBP
$2,886 USD
View
B
Retailer 11
-
£2,168 GBP
$2,905 USD
View
B
Retailer 12
-
£2,197 GBP
$2,944 USD
View
Retailer 13
-
£2,246 GBP
$3,010 USD
View
Price last confirmed 11 days ago
Most Expensive
B
MOH London
LG816630872 · Oct 29
£2,517 GBP
View
13 more retailers have this diamond
Prices start from £614 GBPSave up to £1,902 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
£614 GBP