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Radiant|Lab Grown|IGI

5.03ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG618479306

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

Certificate IGI LG618479306

Diamond specifications and retailer prices

From £355 GBP
$477 USD
As of November 2, 2026
Save £2,595 GBP (88%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,951 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 5.03ct lab-grown radiant diamond

This 5.03ct 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 LG618479306 or 618479306. Listed at 15 retailers as of November 2, 2026, with prices from £355 to £2,951, a £2,595 spread on the same certified stone. Brilliant Earth lists it at £2,951. 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

5.03
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.8°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG618479306
Dimensions12.15 × 8.41 × 5.69 mm
L/W Ratio1.44
Culet sizePointed
Top View
12.15 mm8.41 mm5.03 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG618479306
Side View
Table 65.0%Crown 43.8°Girdle: MediumPavilion 35.2°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: Nov 2
Current: £2,951 GBP|Low: £355 GBP|High: £2,951 GBP|Avg: £1,027 GBP
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
November 2, 2026
Retailer 3£355 GBP
Retailer 12£399 GBP
Retailer 6£441 GBP
Retailer 8£441 GBP
Retailer 16£464 GBP
Retailer 7£689 GBP
Retailer 11£689 GBP
Retailer 9£712 GBP
Retailer 2£732 GBP
Retailer 5£776 GBP
Retailer 15£944 GBP
Retailer 13£1,186 GBP
Retailer 4£1,418 GBP
Retailer 10£1,629 GBP
Retailer 14£2,291 GBP
Brilliant Earth£2,951 GBP

36 data points across 16 retailers

15 retailers£355 GBP to £2,951 GBP

A
Cheapest Retailer
-
£355 GBP
$477 USD
A
Retailer 2
-
£399 GBP
$535 USD
View
A
Retailer 3
-
£441 GBP
$592 USD
View
Retailer 4
-
£441 GBP
$592 USD
View
Price last confirmed 17 days ago
B+
Retailer 5
-
£689 GBP
$924 USD
View
B+
Retailer 6
-
£689 GBP
$925 USD
View
A
Retailer 7
-
£712 GBP
€910 EUR
View
A
Retailer 8
-
£732 GBP
View
A
Retailer 9
-
£776 GBP
$1,042 USD
View
B+
Retailer 10
-
£944 GBP
$1,267 USD
View
B+
Retailer 11
-
£1,186 GBP
$1,591 USD
View
B+
Retailer 12
-
£1,418 GBP
$1,903 USD
View
B
Retailer 13
-
£1,629 GBP
View
B
Retailer 14
-
£2,291 GBP
$3,075 USD
View
Most Expensive
B
Brilliant Earth
9017152A · Nov 2
£2,951 GBP
$3,960 USD
View
14 more retailers have this diamond
Prices start from £355 GBPSave up to £2,595 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
5.03ct Radiant
£355 GBP