Cushion|Lab Grown|IGI

1.21ct E FL Cushion Lab Grown Diamond

ID • E/FL • IGI LG825640157

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG825640157

Diamond specifications and retailer prices

From £366 GBP
$491 USD
As of October 30, 2026
Save £1,703 GBP (82%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,069 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.21ct lab-grown cushion diamond

This 1.21ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG825640157 or 825640157. Listed at 11 retailers as of October 29, 2026, with prices from £366 to £2,069, a £1,703 spread on the same certified stone. MOH London lists it at £2,069. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle36.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825640157
Dimensions7.54 × 5.25 × 3.65 mm
L/W Ratio1.44
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
7.54 mm5.25 mm1.21 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825640157
Side View
Table 65.0%Crown 33.8°Girdle: MED-STKPavilion 36.8°Culet: NoneDepth 69.5%

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 30
Current: £2,069 GBP|Low: £366 GBP|High: £2,306 GBP|Avg: £991 GBP|-10.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 4£366 GBP
Retailer 6£449 GBP
Retailer 3£518 GBP
Retailer 2£545 GBP
Retailer 10£571 GBP
Retailer 5£671 GBP
Retailer 7£744 GBP
Retailer 8£847 GBP
Retailer 11£1,490 GBP
Retailer 9£1,558 GBP
MOH London£2,069 GBP

23 data points across 11 retailers

11 retailers£366 GBP to £2,069 GBP

A
Cheapest Retailer
-
£366 GBP
$491 USD
Final sale: no returns
A
Retailer 2
-
£449 GBP
HK$4,700 HKD
View
Retailer 3
-
£518 GBP
$694 USD
View
Price last confirmed 18 days ago
A
Retailer 4
-
£545 GBP
$730 USD
View
A
Retailer 5
-
£571 GBP
$765 USD
View
A
Retailer 6
-
£671 GBP
View
A
Retailer 7
-
£744 GBP
€950 EUR
View
B+
Retailer 8
-
£847 GBP
ZAR 18,340 ZAR
View
Retailer 9
-
£1,490 GBP
View
Price last confirmed 14 days ago
B+
Retailer 10
-
£1,558 GBP
SGD 2,821 SGD
View
Most Expensive
B
MOH London
LG825640157 · Oct 29
£2,069 GBP
View
10 more retailers have this diamond
Prices start from £366 GBPSave up to £1,703 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
1.21ct Cushion
£366 GBP