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Radiant|Lab Grown|IGI

4.05ct E IF Radiant Lab Grown Diamond

GD • E/IF • IGI LG662415764

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG662415764

Diamond specifications and retailer prices

From £1,249 GBP
$1,663 USD
As of October 27, 2026
Save £6,622 GBP (84%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £7,870 GBP at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

About this 4.05ct lab-grown radiant diamond

This 4.05ct lab-grown radiant 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 LG662415764 or 662415764. Listed at 23 retailers as of October 27, 2026, with prices from £1,249 to £7,870, a £6,622 spread on the same certified stone. Diamond Quarter lists it at £7,870. 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

4.05
Carat
E
Colour
IF
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.5°
Pavilion angle33.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG662415764
Dimensions11.58 × 7.80 × 5.18 mm
L/W Ratio1.48
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.58 mm7.80 mm4.05 ctE / IF
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG662415764
Side View
Table 66.0%Crown 38.5°Girdle: MED-STKPavilion 33.5°Culet: NoneDepth 66.4%

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 27
Current: £2,053 GBP|Low: £1,235 GBP|High: £7,098 GBP|Avg: £3,104 GBP|-6.3%
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
Retailer 19
Retailer 20
Retailer 21
October 30, 2026
Retailer 7£1,249 GBP
Retailer 4£1,358 GBP
Retailer 8£1,398 GBP
Retailer 12£1,449 GBP
Retailer 5£1,577 GBP
Retailer 17£1,626 GBP
Retailer 18£1,672 GBP
Retailer 1£2,053 GBP
Retailer 10£2,071 GBP
Retailer 13£2,573 GBP
Retailer 19£2,715 GBP
Retailer 3£2,998 GBP
Retailer 15£3,083 GBP
Retailer 11£3,203 GBP
Retailer 6£3,903 GBP
Retailer 2£3,980 GBP
Retailer 16£4,159 GBP
Retailer 21£4,197 GBP
Retailer 20£4,735 GBP
Retailer 9£5,084 GBP
Retailer 14£7,098 GBP

39 data points across 21 retailers

23 retailers£1,249 GBP to £7,870 GBP

A
Cheapest Retailer
-
£1,249 GBP
$1,663 USD
A
Retailer 2
-
£1,358 GBP
$1,809 USD
View
A
Retailer 3
-
£1,398 GBP
$1,862 USD
View
Final sale: no returns
A
Retailer 4
-
£1,449 GBP
$1,929 USD
View
Retailer 5
-
£1,493 GBP
$1,988 USD
View
Price last confirmed 17 days ago
A
Retailer 6
-
£1,577 GBP
$2,100 USD
View
A
Retailer 7
-
£1,626 GBP
$2,165 USD
View
A
Retailer 8
-
£1,672 GBP
HK$17,400 HKD
View
A
Retailer 9
-
£2,053 GBP
View
A
Retailer 10
-
£2,071 GBP
$2,758 USD
View
A
Retailer 11
-
£2,573 GBP
$3,427 USD
View
A
Retailer 12
-
£2,715 GBP
$3,616 USD
View
A
Retailer 13
-
£2,998 GBP
View
A
Retailer 14
-
£3,083 GBP
ZAR 66,331 ZAR
View
Retailer 15
-
£3,203 GBP
A$6,562 AUD
View
Price last confirmed 7 days ago
A
Retailer 16
-
£3,903 GBP
$5,198 USD
View
B+
Retailer 17
-
£3,980 GBP
$5,300 USD
View
A
Retailer 18
-
£4,159 GBP
View
B+
Retailer 19
-
£4,197 GBP
$5,589 USD
View
B+
Retailer 20
-
£4,735 GBP
$6,305 USD
View
B+
Retailer 21
-
£5,084 GBP
$6,770 USD
View
Retailer 22
-
£7,098 GBP
A$14,542 AUD
View
Price last confirmed 21 days ago
Most Expensive
B
Diamond Quarter
4.05IFELG649FD0N · Oct 29
£7,870 GBP
View
22 more retailers have this diamond
Prices start from £1,249 GBPSave up to £6,622 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
4.05ct Radiant
£1,249 GBP