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Cushion|Lab Grown|IGI

2.80ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG830628589

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG830628589

Diamond specifications and retailer prices

From £1,172 GBP
$1,570 USD
As of October 29, 2026
Save £4,344 GBP (79%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £5,515 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 2.8ct lab-grown cushion diamond

This 2.8ct 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 LG830628589 or 830628589. Listed at 10 retailers as of October 29, 2026, with prices from £1,172 to £5,515, a £4,344 spread on the same certified stone. Brilliant Earth lists it at £5,515. 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

2.80
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830628589
Dimensions9.62 × 7.60 × 4.95 mm
L/W Ratio1.27
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
9.62 mm7.60 mm2.80 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830628589
Side View
Table 59.0%Crown 34.2°Girdle: MED-THKPavilion 35.2°Culet: NoneDepth 65.1%

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 29
Current: £5,515 GBP|Low: £1,172 GBP|High: £8,650 GBP|Avg: £3,910 GBP|-35.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 5£1,172 GBP
Retailer 4£1,198 GBP
Retailer 8£1,915 GBP
Retailer 3£2,233 GBP
Retailer 6£2,401 GBP
Retailer 9£3,469 GBP
Retailer 7£3,618 GBP
Retailer 10£4,508 GBP
Retailer 2£5,038 GBP
Brilliant Earth£5,515 GBP

34 data points across 10 retailers

10 retailers£1,172 GBP to £5,515 GBP

A
Cheapest Retailer
-
£1,172 GBP
$1,570 USD
A
Retailer 2
-
£1,198 GBP
$1,605 USD
View
A
Retailer 3
-
£1,915 GBP
$2,566 USD
View
A
Retailer 4
-
£2,233 GBP
€2,849 EUR
View
A
Retailer 5
-
£2,401 GBP
$3,217 USD
View
B+
Retailer 6
-
£3,469 GBP
View
B+
Retailer 7
-
£3,618 GBP
$4,848 USD
View
Retailer 8
-
£4,508 GBP
$6,040 USD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
£5,038 GBP
$6,750 USD
View
Most Expensive
B
Brilliant Earth
21286275A · Oct 30
£5,515 GBP
$7,390 USD
View
9 more retailers have this diamond
Prices start from £1,172 GBPSave up to £4,344 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
2.80ct Cushion
£1,172 GBP