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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 $1,075 USD
As of October 30, 2026
Save $4,945 USD (82%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $6,020 USD at Brilliant Earth · As of October 29, 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 29, 2026, with prices from $1,075 to $6,020, a $4,945 spread on the same certified stone. Brilliant Earth lists it at $6,020. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $6,020 USD|Low: $1,075 USD|High: $6,930 USD|Avg: $3,290 USD|-4.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 31, 2026
Retailer 3$1,075 USD
Retailer 4$1,114 USD
Retailer 2$1,153 USD
Retailer 6$3,394 USD
Brilliant Earth$6,020 USD
Retailer 5$6,930 USD

13 data points across 6 retailers

4 retailers$1,075 USD to $6,020 USD

A
Cheapest Retailer
-
$1,075 USD
B+
Retailer 2
-
$1,114 USD
View
A
Retailer 3
-
$1,153 USD
View
Most Expensive
B
Brilliant Earth
18831122A · Oct 29
$6,020 USD
View
3 more retailers have this diamond
Prices start from $1,075 USDSave up to $4,945 USD

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
$1,075 USD