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Radiant|Lab Grown|IGI

5.05ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG618466739

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

Certificate IGI LG618466739

Diamond specifications and retailer prices

From £357 GBP
$479 USD
As of November 2, 2026
Save £2,609 GBP (88%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,966 GBP at Brilliant Earth · As of November 2, 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG618466739 or 618466739. Listed at 15 retailers as of November 2, 2026, with prices from £357 to £2,966, a £2,609 spread on the same certified stone. Brilliant Earth lists it at £2,966. 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
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.8°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG618466739
Dimensions11.94 × 8.44 × 5.75 mm
L/W Ratio1.41
Culet sizePointed
Top View
11.94 mm8.44 mm5.05 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG618466739
Side View
Table 65.0%Crown 42.8°Girdle: MediumPavilion 35°Culet: NoneDepth 68.1%

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: £2,966 GBP|Low: £357 GBP|High: £2,966 GBP|Avg: £1,031 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£357 GBP
Retailer 12£400 GBP
Retailer 6£443 GBP
Retailer 8£443 GBP
Retailer 16£466 GBP
Retailer 11£548 GBP
Retailer 7£690 GBP
Retailer 10£714 GBP
Retailer 2£735 GBP
Retailer 5£779 GBP
Retailer 15£952 GBP
Retailer 13£1,190 GBP
Retailer 4£1,423 GBP
Retailer 9£1,626 GBP
Retailer 14£2,303 GBP
Brilliant Earth£2,966 GBP

37 data points across 16 retailers

15 retailers£357 GBP to £2,966 GBP

A
Cheapest Retailer
-
£357 GBP
$479 USD
A
Retailer 2
-
£400 GBP
$537 USD
View
A
Retailer 3
-
£443 GBP
$594 USD
View
Retailer 4
-
£443 GBP
$594 USD
View
Price last confirmed 17 days ago
A
Retailer 5
-
£548 GBP
$735 USD
View
B+
Retailer 6
-
£690 GBP
$926 USD
View
A
Retailer 7
-
£714 GBP
€913 EUR
View
A
Retailer 8
-
£735 GBP
View
A
Retailer 9
-
£779 GBP
$1,045 USD
View
B+
Retailer 10
-
£952 GBP
$1,277 USD
View
B+
Retailer 11
-
£1,190 GBP
$1,597 USD
View
B+
Retailer 12
-
£1,423 GBP
$1,910 USD
View
B
Retailer 13
-
£1,626 GBP
View
B
Retailer 14
-
£2,303 GBP
$3,090 USD
View
Most Expensive
B
Brilliant Earth
9039898A · Nov 2
£2,966 GBP
$3,980 USD
View
14 more retailers have this diamond
Prices start from £357 GBPSave up to £2,609 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
£357 GBP