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Heart|Lab Grown|IGI

1.54ct D FL Heart Lab Grown Diamond

VG • D/FL • IGI LG825666390

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG825666390

Diamond specifications and retailer prices

From £526 GBP
As of November 4, 2026
Save £2,141 GBP (80%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £2,667 GBP at Brilliant Earth · As of November 4, 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 D colour (colourless) and FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG825666390 or 825666390. Listed at 21 retailers as of November 4, 2026, with prices from £526 to £2,667, a £2,141 spread on the same certified stone. Brilliant Earth lists it at £2,667. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.54
Carat
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.1°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825666390
Dimensions7.34 × 7.94 × 4.62 mm
L/W Ratio1.08
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
7.34 mm7.94 mm1.54 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825666390
Side View
Table 60.0%Crown 37.1°Girdle: MED-STKPavilion 38.8°Culet: NoneDepth 58.2%

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: £2,667 GBP|Low: £526 GBP|High: £3,659 GBP|Avg: £1,436 GBP|-27.1%
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
November 5, 2026
Retailer 4£526 GBP
Retailer 11£615 GBP
Retailer 9£654 GBP
Retailer 12£678 GBP
Retailer 7£783 GBP
Retailer 6£821 GBP
Retailer 17£859 GBP
Retailer 10£861 GBP
Retailer 14£884 GBP
Retailer 13£1,001 GBP
Retailer 15£1,253 GBP
Retailer 5£1,378 GBP
Retailer 3£1,757 GBP
Retailer 8£1,881 GBP
Retailer 16£1,910 GBP
Retailer 2£2,290 GBP
Brilliant Earth£2,667 GBP

32 data points across 17 retailers

21 retailers£526 GBP to £2,667 GBP

A
Cheapest Retailer
-
£526 GBP
Final sale: no returns
A
Retailer 2
-
£615 GBP
View
Retailer 3
-
£654 GBP
View
Price last confirmed 28 days ago
A
Retailer 4
-
£678 GBP
View
Retailer 5
-
£712 GBP
View
Price last confirmed 37 days ago
Retailer 6
-
£759 GBP
View
Price last confirmed 33 days ago
Retailer 7
-
£759 GBP
View
Price last confirmed 24 days ago
B+
Retailer 8
-
£783 GBP
View
A
Retailer 9
-
£821 GBP
View
B+
Retailer 10
-
£859 GBP
View
B+
Retailer 11
-
£861 GBP
View
B+
Retailer 12
-
£884 GBP
View
B+
Retailer 13
-
£1,001 GBP
View
B+
Retailer 14
-
£1,253 GBP
View
B+
Retailer 15
-
£1,378 GBP
View
B
Retailer 16
-
£1,757 GBP
View
B
Retailer 17
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£1,881 GBP
View
B
Retailer 18
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£1,910 GBP
View
Retailer 19
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£2,134 GBP
View
Price last confirmed 36 days ago
B
Retailer 20
-
£2,290 GBP
View
Most Expensive
B
Brilliant Earth
21584435A · Nov 4
£2,667 GBP
$3,600 USD
View
20 more retailers have this diamond
Prices start from £526 GBPSave up to £2,141 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
£526 GBP