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Radiant|Lab Grown|IGI

3.10ct E SI1 Radiant Lab Grown Diamond

EX • E/SI1 • IGI LG669460364

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

Certificate IGI LG669460364

Diamond specifications and retailer prices

From $1,303 USD
£1,026 GBP
As of October 28, 2026
1 retailer carries this diamond
Only listing: $1,303 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 3.1ct lab-grown radiant diamond

This 3.1ct 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 LG669460364 or 669460364. Listed at a single retailer as of October 28, 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

3.10
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.6°
Pavilion angle34.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG669460364
Dimensions10.43 × 7.21 × 4.75 mm
L/W Ratio1.45
Culet sizePointed
Top View
10.43 mm7.21 mm3.10 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG669460364
Side View
Table 64.0%Crown 46.6°Girdle: MediumPavilion 34.2°Culet: NoneDepth 65.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 28
Current: $812 USD|Low: $223 USD|High: $2,750 USD|Avg: $1,039 USD|+6.7%
Retailer 1
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Retailer 10
September 29, 2026
Retailer 9$223 USD
Retailer 3$374 USD
Retailer 4$415 USD
Retailer 7$641 USD
Retailer 5$706 USD
Retailer 1$812 USD
Retailer 6$1,016 USD
Retailer 10$1,082 USD
Retailer 2$2,442 USD
Retailer 8$2,750 USD

13 data points across 10 retailers

1 retailer

B
Diamond Quarter
3.1SI1ELG643AD3N · Oct 28
$1,303 USD
£1,026 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
3.10ct Radiant
$1,303 USD