Radiant|Lab Grown|IGI

1.22ct E IF Radiant Lab Grown Diamond

VG • E/IF • IGI LG578341098

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

Certificate IGI LG578341098

Diamond specifications and retailer prices

From £485 GBP
$650 USD
As of October 30, 2026
Save £1,847 GBP (79%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £2,332 GBP at MOH London · As of November 1, 2026
View at MOH London

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 very-good cut grade and certified by IGI LG578341098 or 578341098. Listed at 20 retailers as of October 30, 2026, with prices from £485 to £2,332, a £1,847 spread on the same certified stone. MOH London lists it at £2,332. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.22
Carat
E
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.7°
Pavilion angle30.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG578341098
Dimensions6.76 × 5.19 × 3.62 mm
L/W Ratio1.30
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.76 mm5.19 mm1.22 ctE / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG578341098
Side View
Table 68.0%Crown 47.7°Girdle: STK-THKPavilion 30.1°Culet: NoneDepth 69.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £2,332 GBP|Low: £416 GBP|High: £2,360 GBP|Avg: £938 GBP|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 12£433 GBP
Retailer 4£485 GBP
Retailer 11£537 GBP
Retailer 2£568 GBP
Retailer 3£619 GBP
Retailer 7£781 GBP
Retailer 5£825 GBP
Retailer 6£839 GBP
Retailer 9£923 GBP
Retailer 8£1,309 GBP
Retailer 13£1,333 GBP
Retailer 10£1,413 GBP
MOH London£2,332 GBP

33 data points across 13 retailers

20 retailers£485 GBP to £2,332 GBP

Retailer 1
-
£433 GBP
$580 USD
Price last confirmed 8 days ago
B+
Retailer 2
-
£485 GBP
$650 USD
View
Final sale: no returns
Retailer 3
-
£485 GBP
$650 USD
View
Price last confirmed 7 days ago
B+
Retailer 4
-
£537 GBP
$720 USD
View
B+
Retailer 5
-
£568 GBP
View
B+
Retailer 6
-
£619 GBP
$830 USD
View
B+
Retailer 7
-
£681 GBP
$912 USD
View
B+
Retailer 8
-
£781 GBP
€996 EUR
View
B
Retailer 9
-
£825 GBP
$1,106 USD
View
B+
Retailer 10
-
£839 GBP
View
B
Retailer 11
-
£923 GBP
ZAR 19,984 ZAR
View
B
Retailer 12
-
£1,309 GBP
A$2,699 AUD
View
B
Retailer 13
-
£1,333 GBP
$1,786 USD
View
B
Retailer 14
-
£1,345 GBP
View
B
Retailer 15
-
£1,413 GBP
$1,893 USD
View
B
Retailer 16
-
£1,558 GBP
View
B
Retailer 17
-
£1,656 GBP
$2,219 USD
View
B
Retailer 18
-
£1,668 GBP
View
B
Retailer 19
-
£2,088 GBP
$2,798 USD
View
Most Expensive
B
MOH London
LG578341098 · Nov 1
£2,332 GBP
View
19 more retailers have this diamond
Prices start from £485 GBPSave up to £1,847 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.

B+
1.22ct Radiant
£485 GBP