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Radiant|Lab Grown|IGI

1.22ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG660420878

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

Certificate IGI LG660420878

Diamond specifications and retailer prices

From £216 GBP
$289 USD
As of October 30, 2026
Save £1,240 GBP (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,455 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.22ct lab-grown radiant diamond

This 1.22ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG660420878 or 660420878. Listed at 19 retailers as of October 30, 2026, with prices from £216 to £1,455, a £1,240 spread on the same certified stone. Brilliant Earth lists it at £1,455. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.22
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.8°
Pavilion angle33.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG660420878
Dimensions7.62 × 5.20 × 3.39 mm
L/W Ratio1.47
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.62 mm5.20 mm1.22 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG660420878
Side View
Table 64.0%Crown 47.8°Girdle: Slightly ThickPavilion 33.3°Culet: NoneDepth 65.2%

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 30
Current: £1,455 GBP|Low: £207 GBP|High: £1,500 GBP|Avg: £674 GBP|-3.0%
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
Retailer 17
Retailer 18
Retailer 19
November 1, 2026
Retailer 17£216 GBP
Retailer 6£242 GBP
Retailer 4£251 GBP
Retailer 18£268 GBP
Retailer 12£283 GBP
Retailer 3£296 GBP
Retailer 9£375 GBP
Retailer 15£384 GBP
Retailer 14£421 GBP
Retailer 13£474 GBP
Retailer 10£617 GBP
Retailer 8£859 GBP
Retailer 11£897 GBP
Retailer 5£977 GBP
Retailer 2£1,073 GBP
Retailer 19£1,103 GBP
Retailer 16£1,108 GBP
Retailer 7£1,315 GBP
Brilliant Earth£1,455 GBP

41 data points across 19 retailers

19 retailers£216 GBP to £1,455 GBP

A
Cheapest Retailer
-
£216 GBP
$289 USD
A
Retailer 2
-
£242 GBP
$324 USD
View
Final sale: no returns
A
Retailer 3
-
£251 GBP
$336 USD
View
A
Retailer 4
-
£268 GBP
$359 USD
View
A
Retailer 5
-
£283 GBP
View
A
Retailer 6
-
£296 GBP
HK$3,100 HKD
View
A
Retailer 7
-
£375 GBP
$502 USD
View
A
Retailer 8
-
£384 GBP
$515 USD
View
A
Retailer 9
-
£421 GBP
€537 EUR
View
A
Retailer 10
-
£474 GBP
View
B+
Retailer 11
-
£617 GBP
$827 USD
View
B+
Retailer 12
-
£859 GBP
SGD 1,556 SGD
View
B+
Retailer 13
-
£897 GBP
$1,202 USD
View
B
Retailer 14
-
£997 GBP
$1,336 USD
View
B+
Retailer 15
-
£1,073 GBP
View
B
Retailer 16
-
£1,103 GBP
$1,479 USD
View
Retailer 17
-
£1,108 GBP
$1,485 USD
View
Price last confirmed 10 days ago
B
Retailer 18
-
£1,315 GBP
$1,762 USD
View
Most Expensive
B
Brilliant Earth
14347199A · Oct 31
£1,455 GBP
$1,950 USD
View
18 more retailers have this diamond
Prices start from £216 GBPSave up to £1,240 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
1.22ct Radiant
£216 GBP