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Cushion|Lab Grown|IGI

4.08ct E IF Cushion Lab Grown Diamond

GD • E/IF • IGI LG735516175

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG735516175

Diamond specifications and retailer prices

From £2,390 GBP
$3,203 USD
As of October 31, 2026
Save £6,238 GBP (72%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £8,629 GBP at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 4.08ct lab-grown cushion diamond

This 4.08ct 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 LG735516175 or 735516175. Listed at 20 retailers as of October 30, 2026, with prices from £2,390 to £8,629, a £6,238 spread on the same certified stone. Taylor and Hart lists it at £8,629. 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

4.08
Carat
E
Colour
IF
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.7°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG735516175
Dimensions9.47 × 9.24 × 6.12 mm
L/W Ratio1.02
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
9.47 mm9.24 mm4.08 ctE / IF
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG735516175
Side View
Table 61.0%Crown 37.7°Girdle: MED-STKPavilion 39.1°Culet: NoneDepth 66.2%

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: £3,932 GBP|Low: £2,390 GBP|High: £9,050 GBP|Avg: £5,080 GBP|-7.1%
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
Retailer 18
Taylor and Hart
October 31, 2026
Retailer 11£2,390 GBP
Retailer 7£2,558 GBP
Retailer 4£2,597 GBP
Retailer 10£2,599 GBP
Retailer 13£3,205 GBP
Retailer 12£3,346 GBP
Retailer 5£3,724 GBP
Retailer 1£3,932 GBP
Retailer 18£4,277 GBP
Retailer 17£4,304 GBP
Retailer 14£5,272 GBP
Retailer 9£5,474 GBP
Retailer 8£5,577 GBP
Retailer 2£5,927 GBP
Retailer 15£6,311 GBP
Retailer 3£6,488 GBP
Retailer 16£6,891 GBP
Retailer 6£7,389 GBP
Taylor and Hart£8,629 GBP

33 data points across 19 retailers

20 retailers£2,390 GBP to £8,629 GBP

A
Cheapest Retailer
-
£2,390 GBP
$3,203 USD
Final sale: no returns
A
Retailer 2
-
£2,558 GBP
$3,427 USD
View
A
Retailer 3
-
£2,597 GBP
$3,480 USD
View
Retailer 4
-
£2,599 GBP
$3,483 USD
View
Price last confirmed 20 days ago
A
Retailer 5
-
£3,205 GBP
$4,295 USD
View
A
Retailer 6
-
£3,346 GBP
View
A
Retailer 7
-
£3,724 GBP
$4,990 USD
View
A
Retailer 8
-
£3,932 GBP
€5,017 EUR
View
A
Retailer 9
-
£4,277 GBP
View
A
Retailer 10
-
£4,304 GBP
$5,767 USD
View
Retailer 11
-
£5,218 GBP
$6,992 USD
View
Price last confirmed 103 days ago
A
Retailer 12
-
£5,272 GBP
ZAR 114,110 ZAR
View
Retailer 13
-
£5,474 GBP
$7,335 USD
View
Price last confirmed 12 days ago
Retailer 14
-
£5,577 GBP
A$11,497 AUD
View
Price last confirmed 9 days ago
B+
Retailer 15
-
£5,927 GBP
$7,941 USD
View
B+
Retailer 16
-
£6,311 GBP
View
B+
Retailer 17
-
£6,488 GBP
$8,693 USD
View
B+
Retailer 18
-
£6,891 GBP
$9,233 USD
View
B+
Retailer 19
-
£7,389 GBP
$9,900 USD
View
Most Expensive
B+
Taylor and Hart
ZLHBLA8 · Oct 30
£8,629 GBP
$11,562 USD
View
19 more retailers have this diamond
Prices start from £2,390 GBPSave up to £6,238 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
4.08ct Cushion
£2,390 GBP