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Cushion|Lab Grown|IGI

2.79ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG804638981

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG804638981

Diamond specifications and retailer prices

From £1,233 GBP
$1,652 USD
As of October 29, 2026
Save £4,342 GBP (78%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £5,575 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 2.79ct lab-grown cushion diamond

This 2.79ct lab-grown cushion sits in the two to three carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG804638981 or 804638981. Listed at 6 retailers as of October 29, 2026, with prices from £1,233 to £5,575, a £4,342 spread on the same certified stone. Brilliant Earth lists it at £5,575. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

2.79
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.1°
Pavilion angle31.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804638981
Dimensions8.08 × 8.07 × 4.90 mm
L/W Ratio1.00
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
8.08 mm8.07 mm2.79 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804638981
Side View
Table 63.0%Crown 38.1°Girdle: STK-THKPavilion 31.4°Culet: NoneDepth 60.7%

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 29
Current: £5,575 GBP|Low: £1,233 GBP|High: £8,605 GBP|Avg: £3,587 GBP|-34.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 3£1,233 GBP
Retailer 4£1,675 GBP
Retailer 5£2,049 GBP
Retailer 6£2,494 GBP
Retailer 2£3,412 GBP
Brilliant Earth£5,575 GBP

29 data points across 6 retailers

6 retailers£1,233 GBP to £5,575 GBP

A
Cheapest Retailer
-
£1,233 GBP
$1,652 USD
A
Retailer 2
-
£1,675 GBP
$2,244 USD
View
A
Retailer 3
-
£2,049 GBP
$2,745 USD
View
A
Retailer 4
-
£2,494 GBP
€3,182 EUR
View
B+
Retailer 5
-
£3,412 GBP
View
Most Expensive
B
Brilliant Earth
20471808A · Oct 30
£5,575 GBP
$7,470 USD
View
5 more retailers have this diamond
Prices start from £1,233 GBPSave up to £4,342 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
2.79ct Cushion
£1,233 GBP