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Radiant|Lab Grown|IGI

1.04ct F SI1 Radiant Lab Grown Diamond

F/SI1 • IGI LG620453443

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

Certificate IGI LG620453443

Diamond specifications and retailer prices

From £280 GBP
As of November 6, 2026
Save £98 GBP (26%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £378 GBP at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.04ct lab-grown radiant diamond

This 1.04ct lab-grown radiant sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included) and certified by IGI LG620453443 or 620453443. Listed at 3 retailers as of November 5, 2026, with prices from £280 to £378, a £98 spread on the same certified stone. Diamond Quarter lists it at £378. 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

1.04
Carat
F
Colour
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.8°
Pavilion angle34.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620453443
Dimensions7.18 × 5.05 × 3.27 mm
L/W Ratio1.42
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
7.18 mm5.05 mm1.04 ctF / SI1
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG620453443
Side View
Table 62.0%Crown 40.8°Girdle: MediumPavilion 34.2°Culet: NoneDepth 64.8%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 6
Current: £280 GBP|Low: £276 GBP|High: £356 GBP|Avg: £333 GBP|+1.6%
Retailer 1
Retailer 2
September 23, 2026
Retailer 1£280 GBP
Retailer 2£356 GBP

5 data points across 2 retailers

3 retailers£280 GBP to £378 GBP

B+
Cheapest Retailer
-
£280 GBP
B
Retailer 2
-
£356 GBP
View
Most Expensive
B
Diamond Quarter
1.04SI1FLG43A79AN · Nov 5
£378 GBP
View
2 more retailers have this diamond
Prices start from £280 GBPSave up to £98 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.

B+
1.04ct Radiant
£280 GBP