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Radiant|Lab Grown|IGI

1.50ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG814633832

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG814633832

Diamond specifications and retailer prices

From £211 GBP
As of November 6, 2026
Save £536 GBP (72%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £747 GBP at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 1.5ct lab-grown radiant diamond

This 1.5ct lab-grown radiant 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 LG814633832 or 814633832. Listed at 10 retailers as of November 6, 2026, with prices from £211 to £747, a £536 spread on the same certified stone. Brilliant Earth lists it at £747. 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 angle38.8°
Pavilion angle42.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG814633832
Dimensions7.85 × 5.59 × 3.94 mm
L/W Ratio1.40
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.85 mm5.59 mm1.50 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG814633832
Side View
Table 69.0%Crown 38.8°Girdle: MediumPavilion 42.9°Culet: NoneDepth 70.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £273 GBP|Low: £211 GBP|High: £738 GBP|Avg: £385 GBP|+1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 7£211 GBP
Retailer 2£269 GBP
Retailer 1£273 GBP
Retailer 5£291 GBP
Retailer 8£334 GBP
Retailer 6£407 GBP
Retailer 4£553 GBP
Retailer 3£729 GBP

43 data points across 8 retailers

10 retailers£211 GBP to £747 GBP

B+
Cheapest Retailer
-
£211 GBP
A
Retailer 2
-
£269 GBP
View
A
Retailer 3
-
£273 GBP
View
Retailer 4
-
£291 GBP
View
Price last confirmed 29 days ago
A
Retailer 5
-
£334 GBP
View
B+
Retailer 6
-
£407 GBP
View
B+
Retailer 7
-
£542 GBP
View
B+
Retailer 8
-
£553 GBP
View
B
Retailer 9
-
£729 GBP
View
Most Expensive
B
Brilliant Earth
22287965A · Nov 6
£747 GBP
$1,000 USD
View
9 more retailers have this diamond
Prices start from £211 GBPSave up to £536 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 Radiant
£211 GBP