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Heart|Lab Grown|IGI

1.54ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG801694234

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG801694234

Diamond specifications and retailer prices

From £426 GBP
As of November 4, 2026
Save £3,359 GBP (89%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,785 GBP at Do Amore Diamonds · As of November 4, 2026
View at Do Amore Diamonds

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 top-tier cut grade and certified by IGI LG801694234 or 801694234. Listed at 13 retailers as of November 4, 2026, with prices from £426 to £3,785, a £3,359 spread on the same certified stone. Do Amore Diamonds lists it at £3,785. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.54
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG801694234
Dimensions8.02 × 6.80 × 4.82 mm
L/W Ratio1.18
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
8.02 mm6.80 mm1.54 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG801694234
Side View
Table 58.0%Crown 38°Girdle: MED-THKPavilion 39.4°Culet: NoneDepth 60.1%

Caratlytics Score

How it works →
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: £3,785 GBP|Low: £426 GBP|High: £5,437 GBP|Avg: £1,635 GBP|-30.4%
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
Retailer 14
November 5, 2026
Retailer 10£426 GBP
Retailer 3£477 GBP
Retailer 7£615 GBP
Retailer 12£620 GBP
Retailer 4£633 GBP
Retailer 5£670 GBP
Retailer 11£813 GBP
Retailer 8£1,183 GBP
Retailer 13£1,310 GBP
Retailer 14£1,533 GBP
Retailer 2£2,291 GBP
Retailer 9£2,533 GBP
Retailer 6£3,022 GBP
Do Amore Diamonds£3,785 GBP

36 data points across 14 retailers

13 retailers£426 GBP to £3,785 GBP

A
Cheapest Retailer
-
£426 GBP
A
Retailer 2
-
£477 GBP
View
A
Retailer 3
-
£615 GBP
View
A
Retailer 4
-
£620 GBP
View
A
Retailer 5
-
£633 GBP
View
A
Retailer 6
-
£670 GBP
View
A
Retailer 7
-
£813 GBP
View
B+
Retailer 8
-
£1,183 GBP
View
B+
Retailer 9
-
£1,310 GBP
View
B+
Retailer 10
-
£1,533 GBP
View
B
Retailer 11
-
£2,291 GBP
View
B
Retailer 12
-
£2,533 GBP
View
Most Expensive
B
Do Amore Diamonds
27-5B7A06A26 · Nov 4
£3,785 GBP
$5,110 USD
View
12 more retailers have this diamond
Prices start from £426 GBPSave up to £3,359 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
£426 GBP