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Radiant|Lab Grown|IGI

4.08ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG670484939

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

Certificate IGI LG670484939

Diamond specifications and retailer prices

From €3,554 EUR
$3,970 USD
As of October 31, 2026
2 retailers carry this diamond
Most expensive: €3,554 EUR at Brilliant Earth
View at Brilliant Earth

About this 4.08ct lab-grown radiant diamond

This 4.08ct lab-grown radiant sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG670484939 or 670484939. Listed at 2 retailers as of October 31, 2026. 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

4.08
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.6°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG670484939
Dimensions11.31 × 7.76 × 5.30 mm
L/W Ratio1.46
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.31 mm7.76 mm4.08 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG670484939
Side View
Table 66.0%Crown 46.6°Girdle: MediumPavilion 35°Culet: NoneDepth 68.3%

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: €3,554 EUR|Low: €388 EUR|High: €4,019 EUR|Avg: €2,000 EUR|-11.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
March 25, 2026
Retailer 3€505 EUR
Retailer 2€567 EUR
Retailer 4€977 EUR
Retailer 5€3,306 EUR
Brilliant Earth€3,554 EUR

44 data points across 5 retailers

2 retailers

Retailer 1
-
€3,306 EUR
$3,694 USD
Most Expensive
B
Brilliant Earth
12775450Y · Oct 31
€3,554 EUR
$3,970 USD
View
1 more retailer has this diamond

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
4.08ct Radiant
€3,554 EUR