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Heart|Lab Grown|IGI

1.01ct D IF Heart Lab Grown Diamond

EX • D/IF • IGI LG620421919

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG620421919

Diamond specifications and retailer prices

From £269 GBP
$357 USD
As of October 28, 2026
Save £1,154 GBP (81%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £1,422 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1.01ct lab-grown heart diamond

This 1.01ct 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 LG620421919 or 620421919. Listed at 22 retailers as of October 28, 2026, with prices from £269 to £1,422, a £1,154 spread on the same certified stone. Brilliant Earth lists it at £1,422. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.01
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle37.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620421919
Dimensions6.24 × 6.81 × 4.02 mm
L/W Ratio1.09
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
6.24 mm6.81 mm1.01 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG620421919
Side View
Table 57.0%Crown 34.9°Girdle: ThickPavilion 37.7°Culet: NoneDepth 59.0%

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: Oct 28
Current: £1,422 GBP|Low: £233 GBP|High: £1,821 GBP|Avg: £563 GBP|-21.9%
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
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Retailer 17
October 29, 2026
Retailer 9£233 GBP
Retailer 4£269 GBP
Retailer 7£301 GBP
Retailer 8£301 GBP
Retailer 11£306 GBP
Retailer 15£397 GBP
Retailer 17£406 GBP
Retailer 3£443 GBP
Retailer 12£474 GBP
Retailer 2£481 GBP
Retailer 14£507 GBP
Retailer 16£523 GBP
Retailer 13£720 GBP
Retailer 6£884 GBP
Retailer 5£983 GBP
Retailer 10£1,189 GBP
Brilliant Earth£1,422 GBP

38 data points across 17 retailers

22 retailers£269 GBP to £1,422 GBP

A
Retailer 1
-
£233 GBP
$310 USD
Price last confirmed 27 days ago
A
Retailer 2
-
£269 GBP
$357 USD
View
Final sale: no returns
A
Retailer 3
-
£282 GBP
$375 USD
View
Price last confirmed 30 days ago
A
Retailer 4
-
£301 GBP
$400 USD
View
Price last confirmed 26 days ago
A
Retailer 5
-
£301 GBP
$400 USD
View
A
Retailer 6
-
£306 GBP
View
A
Retailer 7
-
£397 GBP
$528 USD
View
A
Retailer 8
-
£406 GBP
$540 USD
View
B+
Retailer 9
-
£443 GBP
$589 USD
View
B+
Retailer 10
-
£474 GBP
$630 USD
View
B+
Retailer 11
-
£481 GBP
€609 EUR
View
B+
Retailer 12
-
£507 GBP
ZAR 10,883 ZAR
View
B+
Retailer 13
-
£523 GBP
View
B+
Retailer 14
-
£720 GBP
A$1,471 AUD
View
B
Retailer 15
-
£884 GBP
$1,174 USD
View
B
Retailer 16
-
£969 GBP
$1,287 USD
View
Price last confirmed 28 days ago
B
Retailer 17
-
£983 GBP
$1,306 USD
View
B
Retailer 18
-
£1,071 GBP
A$2,189 AUD
View
Price last confirmed 154 days ago
B
Retailer 19
-
£1,083 GBP
$1,439 USD
View
B
Retailer 20
-
£1,189 GBP
View
B
Retailer 21
-
£1,257 GBP
$1,670 USD
View
Most Expensive
B
Brilliant Earth
14227915A · Oct 28
£1,422 GBP
$1,890 USD
View
21 more retailers have this diamond
Prices start from £269 GBPSave up to £1,154 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
1.01ct Heart
£269 GBP