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Heart|Lab Grown|IGI

1.54ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG811645841

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG811645841

Diamond specifications and retailer prices

From £965 GBP
As of November 2, 2026
Save £2,208 GBP (70%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £3,174 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

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 LG811645841 or 811645841. Listed at 10 retailers as of October 31, 2026, with prices from £965 to £3,174, a £2,208 spread on the same certified stone. Taylor and Hart lists it at £3,174. 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 angle35.5°
Pavilion angle38.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811645841
Dimensions8.08 × 7.20 × 4.64 mm
L/W Ratio1.12
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
8.08 mm7.20 mm1.54 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811645841
Side View
Table 59.0%Crown 35.5°Girdle: THN-STKPavilion 38.6°Culet: NoneDepth 57.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £1,316 GBP|Low: £877 GBP|High: £3,174 GBP|Avg: £1,759 GBP|-1.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Taylor and Hart
November 3, 2026
Retailer 2£877 GBP
Retailer 10£965 GBP
Retailer 6£967 GBP
Retailer 9£1,113 GBP
Retailer 5£1,300 GBP
Retailer 1£1,316 GBP
Retailer 3£1,672 GBP
Retailer 8£1,899 GBP
Retailer 7£2,818 GBP
Retailer 4£3,082 GBP
Taylor and Hart£3,174 GBP

38 data points across 11 retailers

10 retailers£965 GBP to £3,174 GBP

B+
Cheapest Retailer
-
£965 GBP
A
Retailer 2
-
£967 GBP
View
B+
Retailer 3
-
£1,113 GBP
View
B+
Retailer 4
-
£1,300 GBP
View
B+
Retailer 5
-
£1,316 GBP
View
B+
Retailer 6
-
£1,672 GBP
View
B
Retailer 7
-
£1,899 GBP
View
B
Retailer 8
-
£2,818 GBP
View
B
Retailer 9
-
£3,082 GBP
View
Most Expensive
B
Taylor and Hart
3BHTTXW · Oct 31
£3,174 GBP
$4,284 USD
View
9 more retailers have this diamond
Prices start from £965 GBPSave up to £2,208 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
£965 GBP