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Radiant|Lab Grown|IGI

1.09ct F SI1 Radiant Lab Grown Diamond

EX • F/SI1 • IGI LG593372655

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

Certificate IGI LG593372655

Diamond specifications and retailer prices

From £199 GBP
$267 USD
As of November 1, 2026
Save £562 GBP (74%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £761 GBP at MOH London · As of November 1, 2026
View at MOH London

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 LG593372655 or 593372655. Listed at 6 retailers as of November 1, 2026, with prices from £199 to £761, a £562 spread on the same certified stone. MOH London lists it at £761. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle48°
Pavilion angle36.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG593372655
Dimensions7.20 × 5.07 × 3.43 mm
L/W Ratio1.42
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment.
Top View
7.20 mm5.07 mm1.09 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG593372655
Side View
Table 65.0%Crown 48°Girdle: Slightly ThickPavilion 36.3°Culet: NoneDepth 67.7%

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 1
Current: £761 GBP|Low: £199 GBP|High: £770 GBP|Avg: £354 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 6£199 GBP
Retailer 3£268 GBP
Retailer 2£292 GBP
Retailer 5£301 GBP
Retailer 4£330 GBP
MOH London£761 GBP

41 data points across 6 retailers

6 retailers£199 GBP to £761 GBP

A
Cheapest Retailer
-
£199 GBP
$267 USD
A
Retailer 2
-
£268 GBP
$359 USD
View
A
Retailer 3
-
£292 GBP
View
Retailer 4
-
£301 GBP
$404 USD
View
Price last confirmed 74 days ago
B+
Retailer 5
-
£330 GBP
$443 USD
View
Most Expensive
B
MOH London
LG593372655 · Nov 1
£761 GBP
View
5 more retailers have this diamond
Prices start from £199 GBPSave up to £562 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
1.09ct Radiant
£199 GBP