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Radiant|Lab Grown|IGI

4.15ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG772674455

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

Certificate IGI LG772674455

Diamond specifications and retailer prices

From £1,725 GBP
$2,297 USD
As of October 29, 2026
Save £9,231 GBP (84%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £10,956 GBP at Brilliant Earth · As of October 29, 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 LG772674455 or 772674455. Listed at 14 retailers as of October 29, 2026, with prices from £1,725 to £10,956, a £9,231 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 angle47.6°
Pavilion angle32.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG772674455
Dimensions10.10 × 8.06 × 5.59 mm
L/W Ratio1.25
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.10 mm8.06 mm4.15 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG772674455
Side View
Table 68.0%Crown 47.6°Girdle: MED-STKPavilion 32.8°Culet: NoneDepth 69.4%

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 29
Current: £10,956 GBP|Low: £1,725 GBP|High: £358,419 GBP|Avg: £16,938 GBP|-3.1%
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
October 30, 2026
Retailer 3£1,725 GBP
Retailer 2£2,201 GBP
Retailer 13£2,219 GBP
Retailer 12£2,381 GBP
Retailer 8£2,443 GBP
Retailer 6£3,304 GBP
Retailer 10£4,183 GBP
Retailer 9£4,187 GBP
Retailer 7£4,438 GBP
Retailer 5£4,971 GBP
Retailer 11£5,441 GBP
Retailer 4£7,270 GBP
Brilliant Earth£10,956 GBP

30 data points across 13 retailers

14 retailers£1,725 GBP to £10,956 GBP

A
Cheapest Retailer
-
£1,725 GBP
$2,297 USD
A
Retailer 2
-
£2,201 GBP
View
A
Retailer 3
-
£2,219 GBP
$2,955 USD
View
A
Retailer 4
-
£2,381 GBP
$3,171 USD
View
A
Retailer 5
-
£2,443 GBP
€3,099 EUR
View
A
Retailer 6
-
£3,304 GBP
ZAR 71,075 ZAR
View
A
Retailer 7
-
£3,997 GBP
$5,323 USD
View
A
Retailer 8
-
£4,183 GBP
$5,570 USD
View
A
Retailer 9
-
£4,187 GBP
$5,576 USD
View
A
Retailer 10
-
£4,438 GBP
View
Retailer 11
-
£4,971 GBP
$6,620 USD
View
Price last confirmed 15 days ago
B+
Retailer 12
-
£5,441 GBP
$7,246 USD
View
Retailer 13
-
£7,270 GBP
A$14,894 AUD
View
Price last confirmed 21 days ago
Most Expensive
B
Brilliant Earth
20043916A · Oct 29
£10,956 GBP
$14,590 USD
View
13 more retailers have this diamond
Prices start from £1,725 GBPSave up to £9,231 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
£1,725 GBP