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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 €383 EUR
£336 GBP
As of October 28, 2026
Save €3,382 EUR (90%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €3,765 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 €383 to €3,765, a €3,382 spread on the same certified stone. Brilliant Earth lists it at €3,765. 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
Colour
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: €3,765 EUR|Low: €383 EUR|High: €4,106 EUR|Avg: €1,197 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€383 EUR
Retailer 3€412 EUR
Retailer 4€450 EUR
Retailer 8€456 EUR
Retailer 13€692 EUR
Retailer 14€722 EUR
Retailer 2€746 EUR
Retailer 12€782 EUR
Retailer 5€833 EUR
Retailer 6€1,245 EUR
Retailer 10€1,279 EUR
Retailer 9€1,785 EUR
Retailer 11€2,237 EUR
Brilliant Earth€3,765 EUR

36 data points across 14 retailers

17 retailers€383 EUR to €3,765 EUR

A
Cheapest Retailer
-
€383 EUR
£336 GBP
Retailer 2
-
€412 EUR
$459 USD
View
Price last confirmed 32 days ago
Retailer 3
-
€450 EUR
$501 USD
View
Price last confirmed 32 days ago
Retailer 4
-
€456 EUR
$508 USD
View
Price last confirmed 17 days ago
A
Retailer 5
-
€456 EUR
$508 USD
View
A
Retailer 6
-
€692 EUR
$770 USD
View
B+
Retailer 7
-
€722 EUR
$804 USD
View
A
Retailer 8
-
€746 EUR
£653 GBP
View
A
Retailer 9
-
€782 EUR
View
A
Retailer 10
-
€833 EUR
$927 USD
View
B+
Retailer 11
-
€1,245 EUR
$1,386 USD
View
B+
Retailer 12
-
€1,279 EUR
$1,424 USD
View
B+
Retailer 13
-
€1,683 EUR
£1,475 GBP
View
B+
Retailer 14
-
€1,785 EUR
£1,564 GBP
View
B
Retailer 15
-
€2,237 EUR
$2,490 USD
View
Retailer 16
-
€2,246 EUR
$2,500 USD
View
Price last confirmed 29 days ago
Most Expensive
B
Brilliant Earth
10979854A · Oct 26
€3,765 EUR
$4,190 USD
View
16 more retailers have this diamond
Prices start from €383 EURSave up to €3,382 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
€383 EUR