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Cushion|Lab Grown|IGI

4.07ct E IF Cushion Lab Grown Diamond

GD • E/IF • IGI LG678556777

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG678556777

Diamond specifications and retailer prices

From £2,224 GBP
$2,980 USD
As of October 31, 2026
Save £5,119 GBP (70%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £7,343 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 4.07ct lab-grown cushion diamond

This 4.07ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a standard cut grade and certified by IGI LG678556777 or 678556777. Listed at 17 retailers as of October 31, 2026, with prices from £2,224 to £7,343, a £5,119 spread on the same certified stone. Taylor and Hart lists it at £7,343. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

4.07
Carat
E
Colour
IF
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.8°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG678556777
Dimensions9.22 × 9.22 × 5.93 mm
L/W Ratio1.00
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
9.22 mm9.22 mm4.07 ctE / IF
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG678556777
Side View
Table 64.0%Crown 36.8°Girdle: MED-THKPavilion 37.6°Culet: NoneDepth 64.3%

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 31
Current: £2,770 GBP|Low: £2,030 GBP|High: £8,355 GBP|Avg: £4,693 GBP|+10.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Taylor and Hart
October 31, 2026
Retailer 12£2,224 GBP
Retailer 16£2,254 GBP
Retailer 9£2,397 GBP
Retailer 1£2,770 GBP
Retailer 11£2,897 GBP
Retailer 13£2,908 GBP
Retailer 6£3,163 GBP
Retailer 10£3,333 GBP
Retailer 3£3,992 GBP
Retailer 2£4,179 GBP
Retailer 14£4,478 GBP
Retailer 8£5,144 GBP
Retailer 4£5,341 GBP
Retailer 5£5,501 GBP
Retailer 15£5,662 GBP
Retailer 17£5,913 GBP
Retailer 7£7,292 GBP
Taylor and Hart£7,343 GBP

33 data points across 18 retailers

17 retailers£2,224 GBP to £7,343 GBP

A
Cheapest Retailer
-
£2,224 GBP
$2,980 USD
A
Retailer 2
-
£2,254 GBP
$3,020 USD
View
B+
Retailer 3
-
£2,770 GBP
$3,712 USD
View
Final sale: no returns
A
Retailer 4
-
£2,897 GBP
View
A
Retailer 5
-
£2,908 GBP
$3,896 USD
View
A
Retailer 6
-
£3,163 GBP
$4,238 USD
View
A
Retailer 7
-
£3,333 GBP
€4,253 EUR
View
A
Retailer 8
-
£3,992 GBP
View
A
Retailer 9
-
£4,179 GBP
$5,599 USD
View
A
Retailer 10
-
£4,478 GBP
ZAR 96,925 ZAR
View
Retailer 11
-
£5,144 GBP
A$10,603 AUD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
£5,341 GBP
$7,156 USD
View
B+
Retailer 13
-
£5,501 GBP
$7,371 USD
View
B+
Retailer 14
-
£5,662 GBP
View
B+
Retailer 15
-
£5,913 GBP
$7,923 USD
View
B+
Retailer 16
-
£7,292 GBP
$9,770 USD
View
Most Expensive
B+
Taylor and Hart
8YIAU1J · Oct 31
£7,343 GBP
$9,838 USD
View
16 more retailers have this diamond
Prices start from £2,224 GBPSave up to £5,119 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
4.07ct Cushion
£2,224 GBP