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Round|Lab Grown|IGI

1.50ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG792695803

Shape and cutting style on the report: Round brilliant

Certificate IGI LG792695803

Diamond specifications and retailer prices

From £143 GBP
As of November 5, 2026
Save £697 GBP (83%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £840 GBP at Brilliant Earth · As of November 5, 2026
View at Brilliant Earth

About this 1.5ct lab-grown round diamond

This 1.5ct lab-grown round 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 LG792695803 or 792695803. Listed at 18 retailers as of November 5, 2026, with prices from £143 to £840, a £697 spread on the same certified stone. Brilliant Earth lists it at £840. 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 angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG792695803
Dimensions7.39 × 7.35 × 4.47 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.39 mm7.35 mm1.50 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG792695803
Side View
Table 60.0%Crown 35.5°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 60.7%

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: Nov 5
Current: £840 GBP|Low: £143 GBP|High: £851 GBP|Avg: £411 GBP|+2.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
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Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 18
November 6, 2026
Retailer 8£143 GBP
Retailer 4£159 GBP
Retailer 3£166 GBP
Retailer 16£177 GBP
Retailer 9£178 GBP
Retailer 5£310 GBP
Retailer 10£311 GBP
Retailer 11£318 GBP
Retailer 2£323 GBP
Retailer 15£385 GBP
Retailer 18£424 GBP
Retailer 12£470 GBP
Retailer 14£528 GBP
Retailer 17£569 GBP
Retailer 6£579 GBP
Retailer 7£609 GBP
Retailer 13£825 GBP
Brilliant Earth£840 GBP

26 data points across 18 retailers

18 retailers£143 GBP to £840 GBP

A
Cheapest Retailer
-
£143 GBP
A
Retailer 2
-
£159 GBP
View
Final sale: no returns
A
Retailer 3
-
£166 GBP
View
A
Retailer 4
-
£177 GBP
View
Retailer 5
-
£178 GBP
View
Price last confirmed 12 days ago
B+
Retailer 6
-
£310 GBP
View
A
Retailer 7
-
£311 GBP
View
A
Retailer 8
-
£318 GBP
View
A
Retailer 9
-
£323 GBP
View
A
Retailer 10
-
£385 GBP
View
B+
Retailer 11
-
£424 GBP
View
B+
Retailer 12
-
£470 GBP
View
B+
Retailer 13
-
£528 GBP
View
B
Retailer 14
-
£569 GBP
View
B+
Retailer 15
-
£579 GBP
View
B+
Retailer 16
-
£609 GBP
View
B
Retailer 17
-
£825 GBP
View
Most Expensive
B
Brilliant Earth
21501914A · Nov 5
£840 GBP
$1,130 USD
View
17 more retailers have this diamond
Prices start from £143 GBPSave up to £697 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 Round
£143 GBP