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Heart|Lab Grown|IGI

1.22ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG837646991

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG837646991

Diamond specifications and retailer prices

From £191 GBP
As of November 4, 2026
Save £1,505 GBP (89%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,696 GBP at Do Amore Diamonds · As of November 4, 2026
View at Do Amore Diamonds

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 LG837646991 or 837646991. Listed at 13 retailers as of November 4, 2026, with prices from £191 to £1,696, a £1,505 spread on the same certified stone. Do Amore Diamonds lists it at £1,696. 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 angle34.4°
Pavilion angle41.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837646991
Dimensions7.21 × 6.32 × 4.63 mm
L/W Ratio1.14
Girdle conditionFaceted
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
7.21 mm6.32 mm1.22 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837646991
Side View
Table 56.0%Crown 34.4°Girdle: STK-THKPavilion 41.9°Culet: NoneDepth 64.2%

Caratlytics Score

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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: £1,696 GBP|Low: £187 GBP|High: £1,733 GBP|Avg: £778 GBP|-2.1%
Do Amore Diamonds
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 10£191 GBP
Retailer 2£269 GBP
Retailer 8£370 GBP
Retailer 12£395 GBP
Retailer 4£464 GBP
Retailer 5£612 GBP
Retailer 6£642 GBP
Retailer 11£728 GBP
Retailer 13£841 GBP
Retailer 7£1,049 GBP
Retailer 9£1,255 GBP
Retailer 3£1,474 GBP
Do Amore Diamonds£1,696 GBP

33 data points across 13 retailers

13 retailers£191 GBP to £1,696 GBP

A
Cheapest Retailer
-
£191 GBP
A
Retailer 2
-
£269 GBP
View
A
Retailer 3
-
£370 GBP
View
A
Retailer 4
-
£395 GBP
View
A
Retailer 5
-
£464 GBP
View
B+
Retailer 6
-
£612 GBP
View
B+
Retailer 7
-
£642 GBP
View
B+
Retailer 8
-
£728 GBP
View
B+
Retailer 9
-
£841 GBP
View
B+
Retailer 10
-
£1,049 GBP
View
B
Retailer 11
-
£1,255 GBP
View
B
Retailer 12
-
£1,474 GBP
View
Most Expensive
B
Do Amore Diamonds
27-4A63AF22A · Nov 4
£1,696 GBP
$2,290 USD
View
12 more retailers have this diamond
Prices start from £191 GBPSave up to £1,505 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
£191 GBP