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Cushion|Lab Grown|IGI

1.21ct F VS1 Cushion Lab Grown Diamond

EX • F/VS1 • IGI LG737566493

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG737566493

Diamond specifications and retailer prices

From £259 GBP
$347 USD
As of October 30, 2026
Save £648 GBP (71%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £907 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 F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG737566493 or 737566493. Listed at 7 retailers as of October 29, 2026, with prices from £259 to £907, a £648 spread on the same certified stone. MOH London lists it at £907. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
F
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG737566493
Dimensions7.34 × 5.54 × 3.80 mm
L/W Ratio1.32
Girdle conditionFaceted
Culet sizePointed
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
7.34 mm5.54 mm1.21 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG737566493
Side View
Table 61.0%Crown 37°Girdle: MED-THKPavilion 38.2°Culet: NoneDepth 68.6%

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 30
Current: £907 GBP|Low: £259 GBP|High: £912 GBP|Avg: £438 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 31, 2026
Retailer 6£259 GBP
Retailer 5£274 GBP
Retailer 4£282 GBP
Retailer 2£427 GBP
Retailer 3£538 GBP
MOH London£907 GBP

40 data points across 6 retailers

7 retailers£259 GBP to £907 GBP

A
Cheapest Retailer
-
£259 GBP
$347 USD
A
Retailer 2
-
£274 GBP
$368 USD
View
A
Retailer 3
-
£282 GBP
$379 USD
View
B+
Retailer 4
-
£427 GBP
View
Retailer 5
-
£538 GBP
A$1,111 AUD
View
Price last confirmed 28 days ago
B
Retailer 6
-
£851 GBP
$1,142 USD
View
Most Expensive
B
MOH London
LG737566493 · Oct 29
£907 GBP
View
6 more retailers have this diamond
Prices start from £259 GBPSave up to £648 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
£259 GBP