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Radiant|Lab Grown|IGI

4.09ct F SI1 Radiant Lab Grown Diamond

GD • F/SI1 • IGI LG600323290

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

Certificate IGI LG600323290

Diamond specifications and retailer prices

From €1,868 EUR
£1,650 GBP
As of October 31, 2026
2 retailers carry this diamond
Most expensive: €2,062 EUR at Rare Carat · As of August 20, 2026
View at Rare Carat

About this 4.09ct lab-grown radiant diamond

This 4.09ct lab-grown radiant sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG600323290 or 600323290. Listed at 2 retailers as of October 31, 2026. 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

4.09
Carat
F
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.9°
Pavilion angle34.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG600323290
Dimensions11.33 × 7.89 × 5.23 mm
L/W Ratio1.44
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
11.33 mm7.89 mm4.09 ctF / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG600323290
Side View
Table 64.0%Crown 43.9°Girdle: MED-STKPavilion 34.4°Culet: NoneDepth 66.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: €2,062 EUR|Low: €736 EUR|High: €5,822 EUR|Avg: €3,134 EUR|-35.3%
Rare Carat
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
August 22, 2026
Retailer 2€736 EUR
Retailer 12€799 EUR
Retailer 11€838 EUR
Retailer 8€840 EUR
Retailer 13€971 EUR
Retailer 9€1,087 EUR
Rare Carat€2,062 EUR
Retailer 6€2,327 EUR
Retailer 10€3,611 EUR
Retailer 4€4,036 EUR
Retailer 7€4,404 EUR
Retailer 3€4,743 EUR
Retailer 5€4,743 EUR
Retailer 14€5,822 EUR

24 data points across 14 retailers

2 retailers

B
Cheapest Retailer
-
€1,868 EUR
£1,650 GBP
Most Expensive
Rare Carat
1073147 · Aug 20
€2,062 EUR
$2,313 USD
View
Price last confirmed 74 days ago
1 more retailer has this diamond
Prices start from €1,868 EUR

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
4.09ct Radiant
€1,868 EUR