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Radiant|Lab Grown|IGI

1.38ct E SI1 Radiant Lab Grown Diamond

EX • E/SI1 • IGI LG655439600

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

Certificate IGI LG655439600

Diamond specifications and retailer prices

From $492 USD
£388 GBP
As of October 29, 2026
1 retailer carries this diamond
Only listing: $492 USD at Diamond Quarter
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Diamond Quarter

About this 1.38ct lab-grown radiant diamond

This 1.38ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG655439600 or 655439600. Listed at a single retailer as of October 29, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

1.38
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.8°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG655439600
Dimensions7.90 × 5.52 × 3.67 mm
L/W Ratio1.43
Top View
7.90 mm5.52 mm1.38 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG655439600
Side View
Table 65.0%Crown 42.8°Girdle: Slightly ThickPavilion 35°CuletDepth 66.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: $492 USD|Low: $492 USD|High: $492 USD|Avg: $492 USD
September 26, 2026
Diamond Quarter$492 USD

1 data point across 1 retailer

1 retailer

B
Diamond Quarter
1.38SI1ELG00815EN · Oct 29
$492 USD
£388 GBP
View

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
1.38ct Radiant
$492 USD