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Radiant|Lab Grown|IGI

5.05ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG665415778

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

Certificate IGI LG665415778

Diamond specifications and retailer prices

From £5,889 GBP
$7,890 USD
As of October 28, 2026
Save £22,358 GBP (79%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £28,247 GBP at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG665415778 or 665415778. Listed at 24 retailers as of October 28, 2026, with prices from £5,889 to £28,247, a £22,358 spread on the same certified stone. Taylor and Hart lists it at £28,247. 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

5.05
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.7°
Pavilion angle34.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG665415778
Dimensions12.05 × 8.41 × 5.70 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
12.05 mm8.41 mm5.05 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG665415778
Side View
Table 65.0%Crown 43.7°Girdle: MED-STKPavilion 34.3°Culet: NoneDepth 67.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: £9,724 GBP|Low: £5,889 GBP|High: £46,205 GBP|Avg: £13,859 GBP|-4.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
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Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Taylor and Hart
October 30, 2026
Retailer 14£5,889 GBP
Retailer 2£6,501 GBP
Retailer 5£7,651 GBP
Retailer 9£8,239 GBP
Retailer 4£8,434 GBP
Retailer 7£8,534 GBP
Retailer 16£8,678 GBP
Retailer 6£8,828 GBP
Retailer 18£9,334 GBP
Retailer 1£9,724 GBP
Retailer 11£11,217 GBP
Retailer 15£12,755 GBP
Retailer 8£13,501 GBP
Retailer 13£14,875 GBP
Retailer 10£15,711 GBP
Retailer 12£19,139 GBP
Retailer 17£19,490 GBP
Taylor and Hart£28,247 GBP
Retailer 3£45,907 GBP

26 data points across 19 retailers

24 retailers£5,889 GBP to £28,247 GBP

A
Cheapest Retailer
-
£5,889 GBP
$7,890 USD
A
Retailer 2
-
£6,501 GBP
$8,710 USD
View
A
Retailer 3
-
£7,357 GBP
$9,857 USD
View
A
Retailer 4
-
£7,651 GBP
$10,251 USD
View
A
Retailer 5
-
£8,239 GBP
$11,039 USD
View
Final sale: no returns
A
Retailer 6
-
£8,434 GBP
$11,300 USD
View
A
Retailer 7
-
£8,534 GBP
$11,434 USD
View
A
Retailer 8
-
£8,678 GBP
$11,627 USD
View
Retailer 9
-
£8,732 GBP
$11,700 USD
View
Price last confirmed 14 days ago
A
Retailer 10
-
£8,828 GBP
$11,829 USD
View
A
Retailer 11
-
£9,334 GBP
$12,507 USD
View
Retailer 12
-
£9,410 GBP
$12,608 USD
View
Price last confirmed 14 days ago
A
Retailer 13
-
£9,724 GBP
View
A
Retailer 14
-
£11,217 GBP
View
A
Retailer 15
-
£12,755 GBP
$17,090 USD
View
A
Retailer 16
-
£13,501 GBP
View
B+
Retailer 17
-
£14,875 GBP
View
B+
Retailer 18
-
£15,711 GBP
$21,051 USD
View
B+
Retailer 19
-
£16,241 GBP
$21,761 USD
View
B+
Retailer 20
-
£19,139 GBP
ZAR 414,282 ZAR
View
Retailer 21
-
£19,490 GBP
A$40,176 AUD
View
Price last confirmed 8 days ago
Most Expensive
B
Taylor and Hart
ZVW1TLP · Oct 30
£28,247 GBP
$37,847 USD
View
21 more retailers have this diamond
Prices start from £5,889 GBPSave up to £22,358 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
£5,889 GBP