Radiant|Lab Grown|IGI

4.06ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG628420513

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

Certificate IGI LG628420513

Diamond specifications and retailer prices

From €1,503 EUR
£1,322 GBP
As of October 31, 2026
Save €596 EUR (28%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €2,864 EUR at Brilliant Earth · As of October 12, 2026
View at Brilliant Earth

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 top-tier cut grade and certified by IGI LG628420513 or 628420513. Listed at 14 retailers as of October 31, 2026, with a 40% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

4.06
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.2°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG628420513
Dimensions11.05 × 7.85 × 5.36 mm
L/W Ratio1.41
Culet sizePointed
Top View
11.05 mm7.85 mm4.06 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG628420513
Side View
Table 66.0%Crown 31.2°Girdle: MediumPavilion 35.5°Culet: NoneDepth 68.3%

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: Oct 31
Current: €2,864 EUR|Low: €350 EUR|High: €3,240 EUR|Avg: €1,091 EUR|-11.6%
Brilliant Earth
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
Retailer 15
Retailer 16
October 18, 2026
Retailer 16€350 EUR
Retailer 10€378 EUR
Retailer 6€392 EUR
Retailer 13€433 EUR
Retailer 15€433 EUR
Retailer 3€568 EUR
Retailer 14€687 EUR
Retailer 9€708 EUR
Retailer 12€742 EUR
Retailer 7€810 EUR
Retailer 8€1,012 EUR
Retailer 5€1,119 EUR
Retailer 4€1,394 EUR
Retailer 11€1,714 EUR
Retailer 2€2,099 EUR
Brilliant Earth€2,864 EUR

21 data points across 16 retailers

14 retailers€1,503 EUR to €2,099 EUR

Retailer 1
-
€350 EUR
$391 USD
Price last confirmed 25 days ago
Retailer 2
-
€378 EUR
£333 GBP
View
Price last confirmed 21 days ago
Retailer 3
-
€392 EUR
$438 USD
View
Price last confirmed 35 days ago
Retailer 4
-
€433 EUR
$484 USD
View
Price last confirmed 24 days ago
Retailer 5
-
€433 EUR
$484 USD
View
Price last confirmed 21 days ago
Retailer 6
-
€687 EUR
$768 USD
View
Price last confirmed 21 days ago
Retailer 7
-
€708 EUR
£623 GBP
View
Price last confirmed 21 days ago
Retailer 8
-
€1,119 EUR
$1,250 USD
View
Price last confirmed 20 days ago
Retailer 9
-
€1,394 EUR
$1,557 USD
View
Price last confirmed 25 days ago
B+
Retailer 10
-
€1,503 EUR
£1,322 GBP
View
Retailer 11
-
€1,714 EUR
£1,508 GBP
View
Price last confirmed 22 days ago
B
Retailer 12
-
€2,099 EUR
$2,345 USD
View
Retailer 13
-
€2,144 EUR
$2,395 USD
View
Price last confirmed 22 days ago
Most Expensive
Brilliant Earth
9913179A · Oct 12
€2,864 EUR
$3,200 USD
View
Price last confirmed 20 days ago
13 more retailers have this diamond
Prices start from €1,503 EURSave up to €596 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
€1,503 EUR