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Round|Lab Grown|IGI

1.50ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG803613582

Shape and cutting style on the report: Round brilliant

Certificate IGI LG803613582

Diamond specifications and retailer prices

From £166 GBP
As of November 6, 2026
Save £480 GBP (74%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £873 GBP at MOH London · As of October 26, 2026
View at MOH London

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 LG803613582 or 803613582. Listed at 18 retailers as of November 5, 2026, with a 288% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle41.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG803613582
Dimensions7.32 × 7.27 × 4.57 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.32 mm7.27 mm1.50 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG803613582
Side View
Table 58.0%Crown 33.1°Girdle: MED-STKPavilion 41.7°Culet: NoneDepth 62.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £873 GBP|Low: £166 GBP|High: £877 GBP|Avg: £435 GBP|+11.9%
MOH London
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
November 6, 2026
Retailer 10£166 GBP
Retailer 3£209 GBP
Retailer 2£301 GBP
Retailer 11£320 GBP
Retailer 12£322 GBP
Retailer 9£334 GBP
Retailer 7£337 GBP
Retailer 5£377 GBP
Retailer 13£404 GBP
Retailer 4£572 GBP
Retailer 8£594 GBP
Retailer 14£600 GBP
Retailer 6£646 GBP
MOH London£873 GBP

43 data points across 14 retailers

18 retailers£166 GBP to £646 GBP

Retailer 1
-
£154 GBP
Price last confirmed 27 days ago
A
Retailer 2
-
£166 GBP
View
Final sale: no returns
Retailer 3
-
£178 GBP
View
Price last confirmed 24 days ago
Retailer 4
-
£191 GBP
View
Price last confirmed 35 days ago
A
Retailer 5
-
£209 GBP
View
A
Retailer 6
-
£301 GBP
View
B+
Retailer 7
-
£320 GBP
View
A
Retailer 8
-
£322 GBP
View
A
Retailer 9
-
£334 GBP
View
A
Retailer 10
-
£337 GBP
View
Retailer 11
-
£377 GBP
View
Price last confirmed 11 days ago
B+
Retailer 12
-
£404 GBP
View
Retailer 13
-
£572 GBP
View
Price last confirmed 12 days ago
B
Retailer 14
-
£594 GBP
View
B+
Retailer 15
-
£600 GBP
View
Retailer 16
-
£613 GBP
View
Price last confirmed 30 days ago
B
Retailer 17
-
£646 GBP
View
Most Expensive
MOH London
LG803613582 · Oct 26
£873 GBP
View
Price last confirmed 10 days ago
17 more retailers have this diamond
Prices start from £166 GBPSave up to £480 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
£166 GBP