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Cushion|Lab Grown|IGI

1.77ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG848625179

Shape and cutting style on the report: Square cushion antique cut

Certificate IGI LG848625179

Diamond specifications and retailer prices

From £468 GBP
$627 USD
As of October 27, 2026
Save £1,405 GBP (75%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £1,873 GBP at Taylor and Hart · As of October 26, 2026
View at Taylor and Hart

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG848625179 or 848625179. Listed at 6 retailers as of October 26, 2026, with prices from £468 to £1,873, a £1,405 spread on the same certified stone. Taylor and Hart lists it at £1,873. 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
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG848625179
Dimensions7.44 × 7.27 × 4.41 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizeLarge
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
7.44 mm7.27 mm1.77 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG848625179
Side View
Table 58.0%Crown 35.1°Girdle: MED-STKPavilion 40.9°Culet: LargeDepth 60.7%

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 27
Current: £675 GBP|Low: £468 GBP|High: £1,873 GBP|Avg: £1,008 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Taylor and Hart
October 28, 2026
Retailer 5£468 GBP
Retailer 3£604 GBP
Retailer 1£675 GBP
Retailer 4£903 GBP
Retailer 6£925 GBP
Retailer 2£1,086 GBP
Taylor and Hart£1,873 GBP

3 data points across 7 retailers

6 retailers£468 GBP to £1,873 GBP

A
Cheapest Retailer
-
£468 GBP
$627 USD
A
Retailer 2
-
£675 GBP
$905 USD
View
A
Retailer 3
-
£903 GBP
View
A
Retailer 4
-
£925 GBP
$1,240 USD
View
A
Retailer 5
-
£1,086 GBP
$1,455 USD
View
Most Expensive
B+
Taylor and Hart
AZ4ARER · Oct 26
£1,873 GBP
$2,509 USD
View
5 more retailers have this diamond
Prices start from £468 GBPSave up to £1,405 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
£468 GBP