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Radiant|Lab Grown|IGI

4.07ct E SI1 Radiant Lab Grown Diamond

EX • E/SI1 • IGI LG640439977

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

Certificate IGI LG640439977

Diamond specifications and retailer prices

From €381 EUR
£336 GBP
As of October 28, 2026
Save €3,369 EUR (90%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €3,750 EUR at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 4.07ct lab-grown radiant diamond

This 4.07ct lab-grown radiant sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG640439977 or 640439977. Listed at 17 retailers as of October 26, 2026, with prices from €381 to €3,750, a €3,369 spread on the same certified stone. Brilliant Earth lists it at €3,750. 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

4.07
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.3°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG640439977
Dimensions11.22 × 7.94 × 5.37 mm
L/W Ratio1.41
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.22 mm7.94 mm4.07 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG640439977
Side View
Table 64.0%Crown 41.3°Girdle: MediumPavilion 35.5°Culet: NoneDepth 67.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: €3,750 EUR|Low: €381 EUR|High: €4,091 EUR|Avg: €1,184 EUR|-8.3%
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
October 28, 2026
Retailer 7€381 EUR
Retailer 3€411 EUR
Retailer 4€448 EUR
Retailer 8€455 EUR
Retailer 13€689 EUR
Retailer 14€720 EUR
Retailer 2€743 EUR
Retailer 12€779 EUR
Retailer 5€830 EUR
Retailer 6€1,241 EUR
Retailer 10€1,275 EUR
Retailer 9€1,778 EUR
Retailer 11€2,229 EUR
Brilliant Earth€3,750 EUR

34 data points across 14 retailers

17 retailers€381 EUR to €3,750 EUR

A
Cheapest Retailer
-
€381 EUR
£336 GBP
Retailer 2
-
€411 EUR
$459 USD
View
Price last confirmed 34 days ago
Retailer 3
-
€448 EUR
$501 USD
View
Price last confirmed 34 days ago
Retailer 4
-
€455 EUR
$508 USD
View
Price last confirmed 19 days ago
A
Retailer 5
-
€455 EUR
$508 USD
View
A
Retailer 6
-
€689 EUR
$770 USD
View
B+
Retailer 7
-
€720 EUR
$804 USD
View
A
Retailer 8
-
€743 EUR
£653 GBP
View
Retailer 9
-
€779 EUR
View
Price last confirmed 8 days ago
A
Retailer 10
-
€830 EUR
$927 USD
View
B+
Retailer 11
-
€1,241 EUR
$1,386 USD
View
B+
Retailer 12
-
€1,275 EUR
$1,424 USD
View
B+
Retailer 13
-
€1,676 EUR
£1,475 GBP
View
B+
Retailer 14
-
€1,778 EUR
£1,564 GBP
View
B
Retailer 15
-
€2,229 EUR
$2,490 USD
View
Retailer 16
-
€2,238 EUR
$2,500 USD
View
Price last confirmed 31 days ago
Most Expensive
B
Brilliant Earth
10979854A · Oct 26
€3,750 EUR
$4,190 USD
View
16 more retailers have this diamond
Prices start from €381 EURSave up to €3,369 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.

A
4.07ct Radiant
€381 EUR