Radiant|Lab Grown|IGI

4.01ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG800665032

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

Certificate IGI LG800665032

Diamond specifications and retailer prices

From $734 USD
As of October 30, 2026
Save $3,536 USD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $4,270 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 4.01ct lab-grown radiant diamond

This 4.01ct 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 LG800665032 or 800665032. Listed at 14 retailers as of October 30, 2026, with prices from $734 to $4,270, a $3,536 spread on the same certified stone. Brilliant Earth lists it at $4,270. 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

4.01
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle42.5°
Pavilion angle31.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800665032
Dimensions11.07 × 7.80 × 5.17 mm
L/W Ratio1.42
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.07 mm7.80 mm4.01 ctE / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG800665032
Side View
Table 63.0%Crown 42.5°Girdle: MED-STKPavilion 31.5°Culet: NoneDepth 66.3%

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: $4,270 USD|Low: $704 USD|High: $11,380 USD|Avg: $1,884 USD|-31.9%
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 30, 2026
Retailer 11$734 USD
Retailer 10$769 USD
Retailer 3$798 USD
Retailer 4$851 USD
Retailer 12$851 USD
Retailer 8$1,030 USD
Retailer 5$1,189 USD
Retailer 2$1,366 USD
Retailer 14$1,379 USD
Retailer 6$1,460 USD
Retailer 9$2,096 USD
Retailer 13$2,393 USD
Retailer 7$3,360 USD
Brilliant Earth$4,270 USD

42 data points across 14 retailers

14 retailers$734 USD to $4,270 USD

A
Cheapest Retailer
-
$734 USD
Retailer 2
-
$769 USD
£606 GBP
View
Price last confirmed 15 days ago
A
Retailer 3
-
$798 USD
View
A
Retailer 4
-
$851 USD
View
Retailer 5
-
$851 USD
View
Price last confirmed 18 days ago
A
Retailer 6
-
$1,030 USD
View
B+
Retailer 7
-
$1,189 USD
View
B+
Retailer 8
-
$1,366 USD
£1,076 GBP
View
B+
Retailer 9
-
$1,379 USD
View
B+
Retailer 10
-
$1,460 USD
View
B
Retailer 11
-
$2,096 USD
View
B
Retailer 12
-
$2,393 USD
View
B
Retailer 13
-
$3,360 USD
£2,646 GBP
View
Most Expensive
B
Brilliant Earth
21067427A · Oct 30
$4,270 USD
View
13 more retailers have this diamond
Prices start from $734 USDSave up to $3,536 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
4.01ct Radiant
$734 USD