Radiant|Lab Grown|IGI

5.01ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG618490821

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

Certificate IGI LG618490821

Diamond specifications and retailer prices

From £601 GBP
HK$6,300 HKD
As of October 27, 2026
Save £1,790 GBP (75%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £3,242 GBP at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 5.01ct lab-grown radiant diamond

This 5.01ct lab-grown radiant sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG618490821 or 618490821. Listed at 18 retailers as of October 26, 2026, with a 298% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

5.01
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle49.4°
Pavilion angle30.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG618490821
Dimensions11.49 × 8.31 × 5.63 mm
L/W Ratio1.38
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
11.49 mm8.31 mm5.01 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG618490821
Side View
Table 69.0%Crown 49.4°Girdle: MediumPavilion 30.7°Culet: NoneDepth 67.7%

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: £3,242 GBP|Low: £426 GBP|High: £3,480 GBP|Avg: £1,167 GBP|-6.9%
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
October 25, 2026
Retailer 11£443 GBP
Retailer 5£497 GBP
Retailer 14£497 GBP
Retailer 12£550 GBP
Retailer 6£738 GBP
Retailer 4£812 GBP
Retailer 7£847 GBP
Retailer 9£867 GBP
Retailer 8£883 GBP
Retailer 10£1,195 GBP
Retailer 13£1,446 GBP
Retailer 3£1,738 GBP
Retailer 2£2,391 GBP
Brilliant Earth£3,242 GBP

36 data points across 14 retailers

18 retailers£601 GBP to £2,391 GBP

Retailer 1
-
£443 GBP
$595 USD
Price last confirmed 10 days ago
Retailer 2
-
£497 GBP
$667 USD
View
Price last confirmed 9 days ago
Retailer 3
-
£550 GBP
$738 USD
View
Price last confirmed 8 days ago
Retailer 4
-
£550 GBP
$738 USD
View
Price last confirmed 17 days ago
A
Retailer 5
-
£601 GBP
HK$6,300 HKD
View
Retailer 6
-
£738 GBP
$990 USD
View
Price last confirmed 12 days ago
Retailer 7
-
£812 GBP
$1,089 USD
View
Price last confirmed 7 days ago
Retailer 8
-
£847 GBP
View
Price last confirmed 8 days ago
Retailer 9
-
£867 GBP
€1,108 EUR
View
Price last confirmed 10 days ago
Retailer 10
-
£883 GBP
$1,185 USD
View
Price last confirmed 6 days ago
Retailer 11
-
£967 GBP
$1,298 USD
View
Price last confirmed 7 days ago
Retailer 12
-
£1,195 GBP
$1,603 USD
View
Price last confirmed 7 days ago
Retailer 13
-
£1,446 GBP
$1,941 USD
View
Price last confirmed 8 days ago
Retailer 14
-
£1,738 GBP
SGD 3,151 SGD
View
Price last confirmed 8 days ago
Retailer 15
-
£1,779 GBP
$2,388 USD
View
Price last confirmed 7 days ago
B
Retailer 16
-
£2,391 GBP
View
Retailer 17
-
£3,234 GBP
$4,340 USD
View
Most Expensive
Brilliant Earth
15028183A · Oct 26
£3,242 GBP
$4,350 USD
View
Price last confirmed 7 days ago
17 more retailers have this diamond
Prices start from £601 GBPSave up to £1,790 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
5.01ct Radiant
£601 GBP