CaratHunter
Plans
Radiant|Lab Grown|IGI

1.22ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG645443328

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

Certificate IGI LG645443328

Diamond specifications and retailer prices

From £174 GBP
As of November 4, 2026
Save £1,193 GBP (87%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £1,367 GBP at Rare Carat · As of November 2, 2026
View at Rare Carat

About this 1.22ct lab-grown radiant diamond

This 1.22ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG645443328 or 645443328. Listed at 24 retailers as of November 2, 2026, with prices from £174 to £1,367, a £1,193 spread on the same certified stone. Rare Carat lists it at £1,367. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.22
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.8°
Pavilion angle33.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG645443328
Dimensions7.74 × 5.20 × 3.59 mm
L/W Ratio1.49
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
7.74 mm5.20 mm1.22 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG645443328
Side View
Table 63.0%Crown 38.8°Girdle: MediumPavilion 33.9°Culet: NoneDepth 69.0%

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: Nov 4
Current: £1,367 GBP|Low: £174 GBP|High: £1,785 GBP|Avg: £582 GBP|-1.3%
Rare Carat
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 4, 2026
Retailer 3£174 GBP
Retailer 6£195 GBP
Retailer 4£305 GBP
Retailer 10£361 GBP
Retailer 8£373 GBP
Retailer 5£394 GBP
Retailer 2£404 GBP
Retailer 7£530 GBP
Retailer 13£697 GBP
Retailer 9£866 GBP
Retailer 11£879 GBP
Rare Carat£1,367 GBP
Retailer 12£1,785 GBP

42 data points across 13 retailers

24 retailers£174 GBP to £1,367 GBP

A
Cheapest Retailer
-
£174 GBP
A
Retailer 2
-
£195 GBP
View
Final sale: no returns
Retailer 3
-
£202 GBP
View
Price last confirmed 38 days ago
Retailer 4
-
£213 GBP
View
Price last confirmed 36 days ago
Retailer 5
-
£216 GBP
View
Price last confirmed 32 days ago
A
Retailer 6
-
£256 GBP
View
A
Retailer 7
-
£305 GBP
View
A
Retailer 8
-
£361 GBP
View
A
Retailer 9
-
£373 GBP
View
A
Retailer 10
-
£394 GBP
View
A
Retailer 11
-
£404 GBP
View
A
Retailer 12
-
£530 GBP
View
B+
Retailer 13
-
£574 GBP
View
B+
Retailer 14
-
£695 GBP
View
Retailer 15
-
£695 GBP
View
Price last confirmed 35 days ago
Retailer 16
-
£695 GBP
View
Price last confirmed 25 days ago
B+
Retailer 17
-
£697 GBP
View
B+
Retailer 18
-
£732 GBP
View
B+
Retailer 19
-
£733 GBP
View
B+
Retailer 20
-
£793 GBP
View
B+
Retailer 21
-
£866 GBP
View
B+
Retailer 22
-
£879 GBP
View
B
Retailer 23
-
£967 GBP
View
Most Expensive
B
Rare Carat
1053107-77 · Oct 18
£1,367 GBP
$1,845 USD
View
23 more retailers have this diamond
Prices start from £174 GBPSave up to £1,193 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
£174 GBP