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Radiant|Lab Grown|IGI

5.05ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG648486284

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

Certificate IGI LG648486284

Diamond specifications and retailer prices

From £374 GBP
$501 USD
As of October 30, 2026
Save £2,768 GBP (88%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £3,142 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 5.05ct lab-grown radiant diamond

This 5.05ct lab-grown radiant sits in the over five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG648486284 or 648486284. Listed at 15 retailers as of October 30, 2026, with prices from £374 to £3,142, a £2,768 spread on the same certified stone. Brilliant Earth lists it at £3,142. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

5.05
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.1°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG648486284
Dimensions11.98 × 8.39 × 5.75 mm
L/W Ratio1.43
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.98 mm8.39 mm5.05 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG648486284
Side View
Table 66.0%Crown 44.1°Girdle: MediumPavilion 35.4°Culet: NoneDepth 68.5%

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 30
Current: £3,142 GBP|Low: £374 GBP|High: £3,799 GBP|Avg: £1,131 GBP|-17.3%
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
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Retailer 16
October 30, 2026
Retailer 16£374 GBP
Retailer 12£419 GBP
Retailer 4£464 GBP
Retailer 5£464 GBP
Retailer 15£488 GBP
Retailer 9£567 GBP
Retailer 8£702 GBP
Retailer 2£772 GBP
Retailer 6£791 GBP
Retailer 11£795 GBP
Retailer 13£1,197 GBP
Retailer 3£1,220 GBP
Retailer 7£1,485 GBP
Retailer 10£1,939 GBP
Retailer 14£2,198 GBP
Brilliant Earth£3,142 GBP

38 data points across 16 retailers

15 retailers£374 GBP to £3,142 GBP

A
Cheapest Retailer
-
£374 GBP
$501 USD
A
Retailer 2
-
£419 GBP
$561 USD
View
A
Retailer 3
-
£464 GBP
$622 USD
View
Retailer 4
-
£464 GBP
$622 USD
View
Price last confirmed 14 days ago
Retailer 5
-
£488 GBP
View
Price last confirmed 14 days ago
A
Retailer 6
-
£567 GBP
$760 USD
View
A
Retailer 7
-
£772 GBP
View
A
Retailer 8
-
£791 GBP
$1,060 USD
View
Retailer 9
-
£795 GBP
€1,014 EUR
View
Price last confirmed 7 days ago
B+
Retailer 10
-
£1,197 GBP
$1,604 USD
View
B+
Retailer 11
-
£1,220 GBP
$1,635 USD
View
B+
Retailer 12
-
£1,485 GBP
$1,990 USD
View
B
Retailer 13
-
£1,939 GBP
View
B
Retailer 14
-
£2,198 GBP
$2,945 USD
View
Most Expensive
B
Brilliant Earth
11435167A · Oct 30
£3,142 GBP
$4,210 USD
View
14 more retailers have this diamond
Prices start from £374 GBPSave up to £2,768 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
5.05ct Radiant
£374 GBP