Radiant|Lab Grown|IGI

4.06ct F SI1 Radiant Lab Grown Diamond

GD • F/SI1 • IGI LG666422773

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

Certificate IGI LG666422773

Diamond specifications and retailer prices

From €999 EUR
$1,121 USD
As of November 1, 2026
Save €562 EUR (36%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: €1,562 EUR at Diamond Quarter · As of October 31, 2026
View at Diamond Quarter

About this 4.06ct lab-grown radiant diamond

This 4.06ct 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 LG666422773 or 666422773. Listed at 2 retailers as of October 31, 2026, with prices from €999 to €1,562, a €562 spread on the same certified stone. Diamond Quarter lists it at €1,562. 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

4.06
Carat
F
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG666422773
Dimensions11.54 × 7.69 × 5.27 mm
L/W Ratio1.50
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.54 mm7.69 mm4.06 ctF / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG666422773
Side View
Table 66.0%Crown 41°Girdle: MediumPavilion 35.9°Culet: NoneDepth 68.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €999 EUR|Low: €963 EUR|High: €1,583 EUR|Avg: €1,190 EUR|-36.9%
September 23, 2026
Retailer 1€999 EUR

4 data points across 1 retailer

2 retailers€999 EUR to €1,562 EUR

B+
Cheapest Retailer
-
€999 EUR
$1,121 USD
Most Expensive
B
Diamond Quarter
4.06SI1FLG736A96N · Oct 31
€1,562 EUR
£1,379 GBP
View
1 more retailer has this diamond
Prices start from €999 EURSave up to €562 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+
4.06ct Radiant
€999 EUR