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Cushion|Lab Grown|IGI

1.77ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG801694420

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG801694420

Diamond specifications and retailer prices

From £637 GBP
$854 USD
As of October 30, 2026
Save £3,214 GBP (83%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,851 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

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 LG801694420 or 801694420. Listed at 10 retailers as of October 30, 2026, with prices from £637 to £3,851, a £3,214 spread on the same certified stone. Do Amore Diamonds lists it at £3,851. 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 angle35°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG801694420
Dimensions8.37 × 6.55 × 4.55 mm
L/W Ratio1.28
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
8.37 mm6.55 mm1.77 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG801694420
Side View
Table 57.0%Crown 35°Girdle: MED-THKPavilion 37.6°Culet: NoneDepth 58.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £3,851 GBP|Low: £637 GBP|High: £5,105 GBP|Avg: £2,028 GBP|-24.6%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 7£637 GBP
Retailer 9£646 GBP
Retailer 6£827 GBP
Retailer 10£854 GBP
Retailer 2£951 GBP
Retailer 11£1,168 GBP
Retailer 8£2,220 GBP
Retailer 5£2,354 GBP
Retailer 3£2,800 GBP
Retailer 4£3,067 GBP
Do Amore Diamonds£3,851 GBP

29 data points across 11 retailers

10 retailers£637 GBP to £3,851 GBP

A
Cheapest Retailer
-
£637 GBP
$854 USD
A
Retailer 2
-
£646 GBP
$865 USD
View
A
Retailer 3
-
£827 GBP
$1,108 USD
View
A
Retailer 4
-
£854 GBP
$1,144 USD
View
A
Retailer 5
-
£951 GBP
€1,214 EUR
View
A
Retailer 6
-
£1,168 GBP
A$2,408 AUD
View
Retailer 7
-
£2,220 GBP
$2,975 USD
View
Price last confirmed 11 days ago
B+
Retailer 8
-
£2,354 GBP
View
B
Retailer 9
-
£3,067 GBP
$4,110 USD
View
Most Expensive
B
Do Amore Diamonds
27-6E65E0746 · Oct 31
£3,851 GBP
$5,160 USD
View
9 more retailers have this diamond
Prices start from £637 GBPSave up to £3,214 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
£637 GBP