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Radiant|Lab Grown|IGI

3.09ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG669412858

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

Certificate IGI LG669412858

Diamond specifications and retailer prices

From £946 GBP
As of November 5, 2026
1 retailer carries this diamond
Only listing: £946 GBP 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 3.09ct lab-grown radiant diamond

This 3.09ct 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 LG669412858 or 669412858. Listed at a single retailer as of November 5, 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

3.09
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.1°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG669412858
Dimensions10.38 × 7.13 × 4.87 mm
L/W Ratio1.46
Culet sizePointed
Top View
10.38 mm7.13 mm3.09 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG669412858
Side View
Table 63.0%Crown 42.1°Girdle: MediumPavilion 35.6°Culet: NoneDepth 68.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 5
Current: £961 GBP|Low: £195 GBP|High: £3,773 GBP|Avg: £906 GBP|+0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
July 18, 2026
Retailer 2£443 GBP
Retailer 10£465 GBP
Retailer 4£528 GBP
Retailer 9£586 GBP
Retailer 6£634 GBP
Retailer 8£657 GBP
Retailer 5£794 GBP
Retailer 1£961 GBP
Retailer 7£1,816 GBP
Retailer 3£3,773 GBP

68 data points across 10 retailers

1 retailer

B
Diamond Quarter
3.09SI1ELG5880AFN · Nov 5
£946 GBP
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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
3.09ct Radiant
£946 GBP