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Heart|Lab Grown|IGI

1.54ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG745505078

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG745505078

Diamond specifications and retailer prices

From £215 GBP
$289 USD
As of October 30, 2026
Save £1,871 GBP (90%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,087 GBP at Brilliant Earth · As of October 31, 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG745505078 or 745505078. Listed at 12 retailers as of October 30, 2026, with prices from £215 to £2,087, a £1,871 spread on the same certified stone. Brilliant Earth lists it at £2,087. 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
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG745505078
Dimensions8.20 × 7.03 × 4.50 mm
L/W Ratio1.17
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
8.20 mm7.03 mm1.54 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG745505078
Side View
Table 60.0%Crown 35.1°Girdle: STK-THKPavilion 37.1°Culet: NoneDepth 54.9%

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: £2,087 GBP|Low: £215 GBP|High: £2,481 GBP|Avg: £941 GBP|-14.9%
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
Retailer 15
Retailer 16
Retailer 17
October 30, 2026
Retailer 3£215 GBP
Retailer 15£250 GBP
Retailer 4£285 GBP
Retailer 11£425 GBP
Retailer 14£438 GBP
Retailer 13£461 GBP
Retailer 6£580 GBP
Retailer 7£627 GBP
Retailer 10£686 GBP
Retailer 12£727 GBP
Retailer 17£946 GBP
Retailer 9£1,050 GBP
Retailer 2£1,186 GBP
Retailer 8£1,215 GBP
Retailer 5£1,241 GBP
Retailer 16£1,908 GBP
Brilliant Earth£2,087 GBP

26 data points across 17 retailers

12 retailers£215 GBP to £2,087 GBP

A
Cheapest Retailer
-
£215 GBP
$289 USD
A
Retailer 2
-
£250 GBP
$335 USD
View
A
Retailer 3
-
£285 GBP
$382 USD
View
Final sale: no returns
A
Retailer 4
-
£425 GBP
$570 USD
View
A
Retailer 5
-
£438 GBP
$588 USD
View
A
Retailer 6
-
£461 GBP
$619 USD
View
A
Retailer 7
-
£686 GBP
A$1,417 AUD
View
A
Retailer 8
-
£727 GBP
$975 USD
View
B+
Retailer 9
-
£946 GBP
$1,270 USD
View
B+
Retailer 10
-
£1,186 GBP
View
B
Retailer 11
-
£1,908 GBP
$2,560 USD
View
Most Expensive
B
Brilliant Earth
21415803Y · Oct 31
£2,087 GBP
$2,800 USD
View
11 more retailers have this diamond
Prices start from £215 GBPSave up to £1,871 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
£215 GBP