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Cushion|Lab Grown|IGI

1.77ct D FL Cushion Lab Grown Diamond

EX • D/FL

Diamond specifications and retailer prices

From £2,906 GBP
$3,894 USD
As of October 31, 2026
Save £1,125 GBP (28%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £4,032 GBP at Blue Nile · As of October 31, 2026
View at Blue Nile

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. Listed at 2 retailers as of October 31, 2026, with prices from £2,906 to £4,032, a £1,125 spread on the same certified stone. Blue Nile lists it at £4,032. 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
OriginLab Grown
Grading LabIGI
Dimensions9.24 × 6.16 × 4.04 mm
L/W Ratio1.50
Top View
9.24 mm6.16 mm1.77 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 60.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 65.6%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: £4,032 GBP|Low: £2,906 GBP|High: £5,291 GBP|Avg: £4,067 GBP|-23.8%
Blue Nile
Retailer 2
October 17, 2026
Retailer 2£2,906 GBP
Blue Nile£4,032 GBP

3 data points across 2 retailers

2 retailers£2,906 GBP to £4,032 GBP

B
Cheapest Retailer
-
£2,906 GBP
$3,894 USD
Most Expensive
B
Blue Nile
29709537 · Oct 31
£4,032 GBP
$5,402 USD
View
1 more retailer has this diamond
Prices start from £2,906 GBPSave up to £1,125 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.

B
1.77ct Cushion
£2,906 GBP