CaratHunter
Plans
Radiant|Lab Grown|IGI

4.15ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG628419062

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

Certificate IGI LG628419062

Diamond specifications and retailer prices

From £1,224 GBP
As of October 30, 2026
Save £9,732 GBP (89%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £10,956 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 4.15ct lab-grown radiant diamond

This 4.15ct lab-grown radiant sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG628419062 or 628419062. Listed at 22 retailers as of October 28, 2026, with prices from £1,224 to £10,956, a £9,732 spread on the same certified stone. Brilliant Earth lists it at £10,956. 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

4.15
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.9°
Pavilion angle33.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG628419062
Dimensions11.37 × 8.12 × 5.22 mm
L/W Ratio1.40
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
11.37 mm8.12 mm4.15 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG628419062
Side View
Table 60.0%Crown 44.9°Girdle: MediumPavilion 33.4°Culet: NoneDepth 64.3%

Caratlytics Score

How it works →
A+
Exceptional
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 30
Current: £10,956 GBP|Low: £1,224 GBP|High: £10,964 GBP|Avg: £3,008 GBP|-0.1%
Brilliant Earth
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
October 30, 2026
Retailer 2£1,224 GBP
Retailer 5£1,263 GBP
Retailer 6£1,414 GBP
Retailer 13£1,465 GBP
Retailer 3£1,494 GBP
Retailer 11£1,656 GBP
Retailer 12£2,076 GBP
Retailer 8£2,095 GBP
Retailer 10£2,341 GBP
Retailer 16£2,745 GBP
Retailer 9£2,885 GBP
Retailer 19£3,033 GBP
Retailer 14£3,118 GBP
Retailer 4£3,947 GBP
Retailer 18£4,162 GBP
Retailer 15£4,206 GBP
Retailer 17£4,240 GBP
Retailer 7£5,140 GBP
Brilliant Earth£10,956 GBP

21 data points across 19 retailers

22 retailers£1,224 GBP to £10,956 GBP

A+
Cheapest Retailer
-
£1,224 GBP
A
Retailer 2
-
£1,263 GBP
$1,682 USD
View
A
Retailer 3
-
£1,414 GBP
$1,883 USD
View
Final sale: no returns
A
Retailer 4
-
£1,465 GBP
$1,951 USD
View
A
Retailer 5
-
£1,494 GBP
$1,990 USD
View
Retailer 6
-
£1,656 GBP
$2,205 USD
View
Price last confirmed 19 days ago
Retailer 7
-
£2,047 GBP
HK$21,300 HKD
View
Price last confirmed 56 days ago
A
Retailer 8
-
£2,076 GBP
View
A
Retailer 9
-
£2,095 GBP
$2,790 USD
View
A
Retailer 10
-
£2,341 GBP
$3,118 USD
View
A
Retailer 11
-
£2,745 GBP
$3,656 USD
View
A
Retailer 12
-
£2,885 GBP
€3,659 EUR
View
Retailer 13
-
£2,895 GBP
$3,855 USD
View
Price last confirmed 24 days ago
A
Retailer 14
-
£3,033 GBP
View
A
Retailer 15
-
£3,118 GBP
ZAR 67,077 ZAR
View
A
Retailer 16
-
£3,947 GBP
$5,256 USD
View
A
Retailer 17
-
£4,162 GBP
$5,542 USD
View
A
Retailer 18
-
£4,206 GBP
View
A
Retailer 19
-
£4,240 GBP
$5,646 USD
View
Retailer 20
-
£4,941 GBP
$6,580 USD
View
Price last confirmed 31 days ago
A
Retailer 21
-
£5,140 GBP
$6,845 USD
View
Most Expensive
B
Brilliant Earth
14086409A · Oct 28
£10,956 GBP
$14,590 USD
View
21 more retailers have this diamond
Prices start from £1,224 GBPSave up to £9,732 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+
4.15ct Radiant
£1,224 GBP