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Cushion|Lab Grown|IGI

4.22ct E FL Cushion Lab Grown Diamond

ID • E/FL • IGI LG735564704

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG735564704

Diamond specifications and retailer prices

From £3,458 GBP
$4,634 USD
As of October 29, 2026
Save £18,663 GBP (84%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £22,121 GBP at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 4.22ct lab-grown cushion diamond

This 4.22ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG735564704 or 735564704. Listed at 8 retailers as of October 29, 2026, with prices from £3,458 to £22,121, a £18,663 spread on the same certified stone. Do Amore Diamonds lists it at £22,121. 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

4.22
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.9°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG735564704
Dimensions10.91 × 8.44 × 5.68 mm
L/W Ratio1.29
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
10.91 mm8.44 mm4.22 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG735564704
Side View
Table 57.0%Crown 36.9°Girdle: THK-VTKPavilion 41.4°Culet: LargeDepth 67.3%

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: £22,121 GBP|Low: £3,458 GBP|High: £32,772 GBP|Avg: £14,216 GBP|-9.6%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 8£3,458 GBP
Retailer 10£4,185 GBP
Retailer 7£5,773 GBP
Retailer 6£6,079 GBP
Retailer 2£6,493 GBP
Retailer 12£6,825 GBP
Retailer 5£8,570 GBP
Retailer 9£10,283 GBP
Retailer 3£21,767 GBP
Do Amore Diamonds£22,121 GBP
Retailer 4£27,701 GBP
Retailer 11£32,772 GBP

28 data points across 12 retailers

8 retailers£3,458 GBP to £22,121 GBP

A
Cheapest Retailer
-
£3,458 GBP
$4,634 USD
A
Retailer 2
-
£4,185 GBP
$5,607 USD
View
Final sale: no returns
A
Retailer 3
-
£5,773 GBP
$7,735 USD
View
B+
Retailer 4
-
£6,079 GBP
$8,145 USD
View
A
Retailer 5
-
£6,493 GBP
€8,286 EUR
View
B+
Retailer 6
-
£8,570 GBP
View
B+
Retailer 7
-
£10,283 GBP
$13,778 USD
View
Most Expensive
B
Do Amore Diamonds
27-15422FEEB · Oct 30
£22,121 GBP
$29,640 USD
View
7 more retailers have this diamond
Prices start from £3,458 GBPSave up to £18,663 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
4.22ct Cushion
£3,458 GBP