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Heart|Lab Grown|IGI

1.54ct D IF Heart Lab Grown Diamond

VG • D/IF • IGI LG605370264

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG605370264

Diamond specifications and retailer prices

From £351 GBP
$470 USD
As of October 30, 2026
Save £1,278 GBP (78%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £3,344 GBP at Brilliant Earth · As of October 8, 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 very-good cut grade and certified by IGI LG605370264 or 605370264. Listed at 18 retailers as of October 30, 2026, with a 364% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.8°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG605370264
Dimensions8.25 × 7.17 × 4.53 mm
L/W Ratio1.15
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
8.25 mm7.17 mm1.54 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG605370264
Side View
Table 70.0%Crown 38.8°Girdle: MED-STKPavilion 39.4°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: £3,344 GBP|Low: £337 GBP|High: £3,344 GBP|Avg: £961 GBP
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
November 2, 2026
Retailer 14£351 GBP
Retailer 6£393 GBP
Retailer 5£393 GBP
Retailer 15£435 GBP
Retailer 11£541 GBP
Retailer 13£584 GBP
Retailer 2£722 GBP
Retailer 10£748 GBP
Retailer 7£825 GBP
Retailer 12£979 GBP
Retailer 9£1,014 GBP
Retailer 4£1,399 GBP
Retailer 8£1,600 GBP
Retailer 3£1,629 GBP
Brilliant Earth£3,344 GBP

45 data points across 15 retailers

18 retailers£351 GBP to £1,629 GBP

A
Cheapest Retailer
-
£351 GBP
$470 USD
A
Retailer 2
-
£393 GBP
$526 USD
View
Final sale: no returns
A
Retailer 3
-
£393 GBP
$527 USD
View
A
Retailer 4
-
£435 GBP
$583 USD
View
Retailer 5
-
£435 GBP
$583 USD
View
Price last confirmed 17 days ago
A
Retailer 6
-
£541 GBP
$725 USD
View
A
Retailer 7
-
£584 GBP
$782 USD
View
A
Retailer 8
-
£722 GBP
View
A
Retailer 9
-
£748 GBP
ZAR 16,198 ZAR
View
B+
Retailer 10
-
£825 GBP
$1,105 USD
View
B+
Retailer 11
-
£979 GBP
$1,312 USD
View
B+
Retailer 12
-
£1,014 GBP
A$2,090 AUD
View
B
Retailer 13
-
£1,399 GBP
$1,875 USD
View
B
Retailer 14
-
£1,422 GBP
$1,905 USD
View
B
Retailer 15
-
£1,535 GBP
$2,057 USD
View
B
Retailer 16
-
£1,600 GBP
View
B
Retailer 17
-
£1,629 GBP
$2,183 USD
View
Most Expensive
Brilliant Earth
21385981A · Oct 8
£3,344 GBP
$4,480 USD
View
Price last confirmed 24 days ago
17 more retailers have this diamond
Prices start from £351 GBPSave up to £1,278 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
£351 GBP