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Heart|Lab Grown|IGI

1.54ct E FL Heart Lab Grown Diamond

ID • E/FL • IGI LG749573309

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG749573309

Diamond specifications and retailer prices

From £1,221 GBP
$1,636 USD
As of October 31, 2026
Save £1,324 GBP (52%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £2,545 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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG749573309 or 749573309. Listed at 7 retailers as of October 30, 2026, with prices from £1,221 to £2,545, a £1,324 spread on the same certified stone. Brilliant Earth lists it at £2,545. 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
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG749573309
Dimensions7.14 × 7.98 × 4.70 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
7.14 mm7.98 mm1.54 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG749573309
Side View
Table 57.0%Crown 37.6°Girdle: MED-STKPavilion 38.2°Culet: NoneDepth 58.9%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £2,545 GBP|Low: £637 GBP|High: £5,053 GBP|Avg: £1,909 GBP|-14.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 9£637 GBP
Retailer 5£822 GBP
Retailer 2£1,221 GBP
Retailer 3£1,336 GBP
Retailer 4£1,449 GBP
Retailer 10£1,453 GBP
Retailer 8£1,474 GBP
Retailer 11£1,495 GBP
Retailer 6£2,351 GBP
Brilliant Earth£2,545 GBP
Retailer 12£3,109 GBP
Retailer 7£3,821 GBP

17 data points across 12 retailers

7 retailers£1,221 GBP to £2,545 GBP

Retailer 1
-
£431 GBP
$577 USD
Price last confirmed 19 days ago
Retailer 2
-
£619 GBP
$829 USD
View
Price last confirmed 32 days ago
Retailer 3
-
£822 GBP
$1,102 USD
View
Price last confirmed 19 days ago
B+
Retailer 4
-
£1,221 GBP
$1,636 USD
View
Retailer 5
-
£1,550 GBP
$2,077 USD
View
Price last confirmed 20 days ago
Retailer 6
-
£2,351 GBP
View
Price last confirmed 20 days ago
Most Expensive
B
Brilliant Earth
21406328Y · Oct 30
£2,545 GBP
$3,410 USD
View
6 more retailers have this diamond
Prices start from £1,221 GBPSave up to £1,324 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.

B+
1.54ct Heart
£1,221 GBP