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Cushion|Lab Grown|IGI

4.06ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • IGI LG645465199

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG645465199

Diamond specifications and retailer prices

From €958 EUR
$1,075 USD
As of October 30, 2026
Save €4,471 EUR (82%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: €5,430 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 4.06ct lab-grown cushion diamond

This 4.06ct lab-grown cushion 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 LG645465199 or 645465199. Listed at 4 retailers as of October 30, 2026, with prices from €958 to €5,430, a €4,471 spread on the same certified stone. Brilliant Earth lists it at €5,430. 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
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.2°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG645465199
Dimensions10.26 × 8.22 × 5.79 mm
L/W Ratio1.25
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.26 mm8.22 mm4.06 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG645465199
Side View
Table 64.0%Crown 39.2°Girdle: MED-THKPavilion 37.5°Culet: NoneDepth 70.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €5,430 EUR|Low: €958 EUR|High: €6,179 EUR|Avg: €2,934 EUR|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 31, 2026
Retailer 3€958 EUR
Retailer 4€993 EUR
Retailer 2€1,028 EUR
Retailer 6€3,026 EUR
Brilliant Earth€5,430 EUR
Retailer 5€6,179 EUR

13 data points across 6 retailers

4 retailers€958 EUR to €5,430 EUR

A
Cheapest Retailer
-
€958 EUR
$1,075 USD
B+
Retailer 2
-
€993 EUR
$1,114 USD
View
A
Retailer 3
-
€1,028 EUR
$1,153 USD
View
Most Expensive
B
Brilliant Earth
18831122A · Oct 31
€5,430 EUR
$6,090 USD
View
3 more retailers have this diamond
Prices start from €958 EURSave up to €4,471 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
4.06ct Cushion
€958 EUR