Radiant|Lab Grown|IGI

4.01ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG601304489

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

Certificate IGI LG601304489

Diamond specifications and retailer prices

From $1,846 USD
£1,454 GBP
As of October 29, 2026
2 retailers carry this diamond
Most expensive: $4,230 USD at Brilliant Earth · As of September 28, 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 LG601304489 or 601304489. Listed at 2 retailers as of October 29, 2026. 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
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.5°
Pavilion angle36.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG601304489
Dimensions10.84 × 7.83 × 5.45 mm
L/W Ratio1.38
Culet sizePointed
Top View
10.84 mm7.83 mm4.01 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG601304489
Side View
Table 66.0%Crown 45.5°Girdle: MED-STKPavilion 36.2°Culet: NoneDepth 69.6%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 29
Current: $4,230 USD|Low: $706 USD|High: $6,590 USD|Avg: $1,829 USD|-35.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
September 26, 2026
Retailer 7$726 USD
Retailer 3$779 USD
Retailer 2$816 USD
Retailer 4$894 USD
Retailer 5$1,350 USD
Retailer 6$2,888 USD
Brilliant Earth$4,230 USD

79 data points across 7 retailers

2 retailers

B+
Cheapest Retailer
-
$1,846 USD
£1,454 GBP
Most Expensive
Brilliant Earth
8407846A · Sep 28
$4,230 USD
View
Price last confirmed 32 days ago
1 more retailer has this diamond
Prices start from $1,846 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.

B+
4.01ct Radiant
$1,846 USD