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Heart|Lab Grown|IGI

1.50ct F SI1 Heart Lab Grown Diamond

ID • F/SI1 • IGI LG595367647

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG595367647

Diamond specifications and retailer prices

From £371 GBP
As of November 6, 2026
Save £876 GBP (70%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £1,248 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.5ct lab-grown heart diamond

This 1.5ct lab-grown heart sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG595367647 or 595367647. Listed at 8 retailers as of November 4, 2026, with prices from £371 to £1,248, a £876 spread on the same certified stone. Brilliant Earth lists it at £1,248. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.50
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle38.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG595367647
Dimensions7.80 × 6.79 × 4.64 mm
L/W Ratio1.15
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.80 mm6.79 mm1.50 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG595367647
Side View
Table 55.0%Crown 35.5°Girdle: ThickPavilion 38.1°Culet: NoneDepth 59.5%

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 6
Current: £1,248 GBP|Low: £371 GBP|High: £1,285 GBP|Avg: £675 GBP|-2.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5£371 GBP
Retailer 8£461 GBP
Retailer 6£469 GBP
Retailer 2£508 GBP
Retailer 7£537 GBP
Retailer 4£715 GBP
Retailer 3£1,151 GBP
Brilliant Earth£1,248 GBP

39 data points across 8 retailers

8 retailers£371 GBP to £1,248 GBP

A
Cheapest Retailer
-
£371 GBP
B+
Retailer 2
-
£469 GBP
View
B+
Retailer 3
-
£508 GBP
View
B+
Retailer 4
-
£537 GBP
View
B
Retailer 5
-
£715 GBP
View
B
Retailer 6
-
£961 GBP
View
B
Retailer 7
-
£1,151 GBP
View
Most Expensive
B
Brilliant Earth
8689633A · Nov 4
£1,248 GBP
$1,670 USD
View
7 more retailers have this diamond
Prices start from £371 GBPSave up to £876 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
1.50ct Heart
£371 GBP