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Radiant|Lab Grown|IGI

4.00ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG674533839

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

Certificate IGI LG674533839

Diamond specifications and retailer prices

From $1,616 USD
£1,273 GBP
As of October 29, 2026
2 retailers carry this diamond
Most expensive: $3,651 USD at Rare Carat
View at Rare Carat

About this 4ct lab-grown radiant diamond

This 4ct 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 LG674533839 or 674533839. 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

4.00
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.5°
Pavilion angle33.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG674533839
Dimensions10.37 × 7.13 × 4.39 mm
L/W Ratio1.45
Culet sizePointed
Top View
10.37 mm7.13 mm4.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG674533839
Side View
Table 67.0%Crown 44.5°Girdle: Slightly ThickPavilion 33.8°Culet: NoneDepth 64.3%

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: $834 USD|Low: $582 USD|High: $6,550 USD|Avg: $1,416 USD|-22.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
June 15, 2026
Retailer 9$630 USD
Retailer 7$768 USD
Retailer 1$834 USD
Retailer 6$905 USD
Retailer 4$984 USD
Retailer 5$1,088 USD
Retailer 3$1,221 USD
Retailer 2$1,999 USD
Retailer 8$6,550 USD

69 data points across 9 retailers

2 retailers

B+
Cheapest Retailer
-
$1,616 USD
£1,273 GBP
Most Expensive
Rare Carat
674533839
$3,651 USD
View
1 more retailer has this diamond
Prices start from $1,616 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+
4.00ct Radiant
$1,616 USD