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Radiant|Lab Grown|IGI

1.09ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG594329347

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

Certificate IGI LG594329347

Diamond specifications and retailer prices

From £433 GBP
As of November 2, 2026
1 retailer carries this diamond
Only listing: £433 GBP at Diamond Quarter
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Diamond Quarter

About this 1.09ct lab-grown radiant diamond

This 1.09ct lab-grown radiant sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG594329347 or 594329347. Listed at a single retailer as of November 2, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

1.09
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46°
Pavilion angle35.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG594329347
Dimensions7.29 × 5.07 × 3.43 mm
L/W Ratio1.44
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
7.29 mm5.07 mm1.09 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG594329347
Side View
Table 65.0%Crown 46°Girdle: MED-STKPavilion 35.8°Culet: NoneDepth 67.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 2
Current: £264 GBP|Low: £160 GBP|High: £857 GBP|Avg: £478 GBP|+64.9%
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April 14, 2026
Retailer 10£219 GBP
Retailer 1£264 GBP
Retailer 6£289 GBP
Retailer 7£297 GBP
Retailer 2£298 GBP
Retailer 4£342 GBP
Retailer 5£637 GBP
Retailer 9£715 GBP
Retailer 11£715 GBP
Retailer 3£745 GBP
Retailer 8£857 GBP

27 data points across 11 retailers

1 retailer

B
Diamond Quarter
1.09SI1FLG475AEFN · Nov 2
£433 GBP
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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
1.09ct Radiant
£433 GBP