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Heart|Lab Grown|IGI

1.22ct D IF Heart Lab Grown Diamond

EX • D/IF • IGI LG627490059

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG627490059

Diamond specifications and retailer prices

From £277 GBP
As of November 4, 2026
Save £1,219 GBP (81%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,496 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.22ct lab-grown heart diamond

This 1.22ct lab-grown heart 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 LG627490059 or 627490059. Listed at 19 retailers as of November 4, 2026, with prices from £277 to £1,496, a £1,219 spread on the same certified stone. Brilliant Earth lists it at £1,496. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG627490059
Dimensions6.77 × 7.47 × 4.22 mm
L/W Ratio1.10
Girdle conditionFaceted
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
6.77 mm7.47 mm1.22 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG627490059
Side View
Table 61.0%Crown 35.2°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 56.5%

Caratlytics Score

How it works →
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 4
Current: £1,496 GBP|Low: £270 GBP|High: £1,496 GBP|Avg: £700 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
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Retailer 17
November 5, 2026
Retailer 8£277 GBP
Retailer 12£310 GBP
Retailer 5£321 GBP
Retailer 16£344 GBP
Retailer 6£456 GBP
Retailer 4£461 GBP
Retailer 17£522 GBP
Retailer 14£550 GBP
Retailer 13£593 GBP
Retailer 7£610 GBP
Retailer 2£615 GBP
Retailer 11£964 GBP
Retailer 3£1,105 GBP
Retailer 9£1,133 GBP
Retailer 15£1,254 GBP
Retailer 10£1,339 GBP
Brilliant Earth£1,496 GBP

38 data points across 17 retailers

19 retailers£277 GBP to £1,496 GBP

A
Cheapest Retailer
-
£277 GBP
A
Retailer 2
-
£310 GBP
View
Final sale: no returns
A
Retailer 3
-
£321 GBP
View
A
Retailer 4
-
£344 GBP
View
Retailer 5
-
£349 GBP
View
Price last confirmed 11 days ago
A
Retailer 6
-
£456 GBP
View
A
Retailer 7
-
£461 GBP
View
B+
Retailer 8
-
£522 GBP
View
B+
Retailer 9
-
£550 GBP
View
B+
Retailer 10
-
£593 GBP
View
B+
Retailer 11
-
£610 GBP
View
B+
Retailer 12
-
£615 GBP
View
B+
Retailer 13
-
£870 GBP
View
B
Retailer 14
-
£964 GBP
View
B
Retailer 15
-
£1,105 GBP
View
B
Retailer 16
-
£1,133 GBP
View
B
Retailer 17
-
£1,254 GBP
View
B
Retailer 18
-
£1,339 GBP
View
Most Expensive
B
Brilliant Earth
11258394A · Nov 4
£1,496 GBP
$2,020 USD
View
18 more retailers have this diamond
Prices start from £277 GBPSave up to £1,219 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 Heart
£277 GBP