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Radiant|Lab Grown|IGI

1.09ct F IF Radiant Lab Grown Diamond

VG • F/IF • IGI LG844602870

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

Certificate IGI LG844602870

Diamond specifications and retailer prices

From £169 GBP
As of November 6, 2026
Save £982 GBP (85%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,151 GBP at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

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 IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG844602870 or 844602870. Listed at 10 retailers as of November 6, 2026, with prices from £169 to £1,151, a £982 spread on the same certified stone. Brilliant Earth lists it at £1,151. 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

1.09
Carat
F
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.5°
Pavilion angle36.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844602870
Dimensions7.09 × 5.11 × 3.55 mm
L/W Ratio1.39
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.09 mm5.11 mm1.09 ctF / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844602870
Side View
Table 66.0%Crown 39.5°Girdle: Slightly ThickPavilion 36.5°Culet: NoneDepth 69.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £1,151 GBP|Low: £169 GBP|High: £1,151 GBP|Avg: £408 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 7£169 GBP
Retailer 9£196 GBP
Retailer 6£210 GBP
Retailer 10£253 GBP
Retailer 5£315 GBP
Retailer 4£317 GBP
Retailer 2£339 GBP
Retailer 3£492 GBP
Retailer 8£642 GBP
Brilliant Earth£1,151 GBP

2 data points across 10 retailers

10 retailers£169 GBP to £1,151 GBP

A
Cheapest Retailer
-
£169 GBP
Final sale: no returns
A
Retailer 2
-
£196 GBP
View
A
Retailer 3
-
£210 GBP
View
A
Retailer 4
-
£253 GBP
View
A
Retailer 5
-
£315 GBP
View
A
Retailer 6
-
£317 GBP
View
A
Retailer 7
-
£339 GBP
View
B+
Retailer 8
-
£492 GBP
View
B+
Retailer 9
-
£642 GBP
View
Most Expensive
B
Brilliant Earth
22525738A · Nov 6
£1,151 GBP
$1,540 USD
View
9 more retailers have this diamond
Prices start from £169 GBPSave up to £982 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
£169 GBP