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Heart|Lab Grown|IGI

1.54ct E IF Heart Lab Grown Diamond

ID • E/IF • IGI LG654413546

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG654413546

Diamond specifications and retailer prices

From £257 GBP
$344 USD
As of October 30, 2026
Save £1,937 GBP (88%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £2,194 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.54ct lab-grown heart diamond

This 1.54ct lab-grown heart sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG654413546 or 654413546. Listed at 22 retailers as of October 30, 2026, with prices from £257 to £2,194, a £1,937 spread on the same certified stone. Brilliant Earth lists it at £2,194. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.54
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG654413546
Dimensions7.30 × 8.19 × 4.49 mm
L/W Ratio1.12
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
7.30 mm8.19 mm1.54 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG654413546
Side View
Table 60.0%Crown 36.3°Girdle: MED-THKPavilion 39.8°Culet: NoneDepth 54.8%

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 30
Current: £2,194 GBP|Low: £244 GBP|High: £2,194 GBP|Avg: £793 GBP
Brilliant Earth
Retailer 2
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October 30, 2026
Retailer 19£257 GBP
Retailer 2£287 GBP
Retailer 9£298 GBP
Retailer 4£319 GBP
Retailer 8£319 GBP
Retailer 16£433 GBP
Retailer 3£510 GBP
Retailer 6£512 GBP
Retailer 15£548 GBP
Retailer 13£571 GBP
Retailer 14£739 GBP
Retailer 18£796 GBP
Retailer 5£832 GBP
Retailer 20£1,024 GBP
Retailer 10£1,056 GBP
Retailer 12£1,158 GBP
Retailer 7£1,234 GBP
Retailer 17£1,252 GBP
Retailer 11£1,804 GBP
Brilliant Earth£2,194 GBP

39 data points across 20 retailers

22 retailers£257 GBP to £2,194 GBP

A
Cheapest Retailer
-
£257 GBP
$344 USD
A
Retailer 2
-
£287 GBP
$385 USD
View
Final sale: no returns
A
Retailer 3
-
£298 GBP
$399 USD
View
A
Retailer 4
-
£319 GBP
$427 USD
View
A
Retailer 5
-
£319 GBP
$427 USD
View
A
Retailer 6
-
£433 GBP
$580 USD
View
A
Retailer 7
-
£510 GBP
$683 USD
View
A
Retailer 8
-
£512 GBP
$686 USD
View
A
Retailer 9
-
£548 GBP
ZAR 11,852 ZAR
View
A
Retailer 10
-
£571 GBP
View
A
Retailer 11
-
£739 GBP
A$1,524 AUD
View
A
Retailer 12
-
£796 GBP
$1,067 USD
View
B+
Retailer 13
-
£832 GBP
$1,115 USD
View
B+
Retailer 14
-
£1,024 GBP
$1,372 USD
View
B+
Retailer 15
-
£1,056 GBP
$1,415 USD
View
B+
Retailer 16
-
£1,158 GBP
$1,551 USD
View
B+
Retailer 17
-
£1,193 GBP
$1,598 USD
View
B+
Retailer 18
-
£1,234 GBP
$1,654 USD
View
B+
Retailer 19
-
£1,252 GBP
View
B+
Retailer 20
-
£1,422 GBP
$1,905 USD
View
Retailer 21
-
£1,804 GBP
A$3,718 AUD
View
Price last confirmed 22 days ago
Most Expensive
B
Brilliant Earth
14718265A · Oct 30
£2,194 GBP
$2,940 USD
View
21 more retailers have this diamond
Prices start from £257 GBPSave up to £1,937 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
1.54ct Heart
£257 GBP