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Round|Lab Grown|IGI

3.09ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG659468107

Shape and cutting style on the report: Round brilliant

Certificate IGI LG659468107

Diamond specifications and retailer prices

From £767 GBP
As of November 6, 2026
2 retailers carry this diamond
Most expensive: £1,498 GBP at Rare Carat · As of August 16, 2026
View at Rare Carat

About this 3.09ct lab-grown round diamond

This 3.09ct lab-grown round 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 LG659468107 or 659468107. Listed at 2 retailers as of November 6, 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

3.09
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG659468107
Dimensions9.35 × 9.28 × 5.78 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.35 mm9.28 mm3.09 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG659468107
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 6
Current: £1,498 GBP|Low: £160 GBP|High: £3,217 GBP|Avg: £1,030 GBP|-8.3%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
September 9, 2026
Retailer 9£342 GBP
Retailer 5£374 GBP
Retailer 7£464 GBP
Retailer 3£525 GBP
Retailer 4£666 GBP
Retailer 6£717 GBP
Retailer 2£767 GBP
Retailer 8£788 GBP
Rare Carat£1,498 GBP
Retailer 10£3,217 GBP

73 data points across 10 retailers

2 retailers

B+
Cheapest Retailer
-
£767 GBP
Most Expensive
Rare Carat
97188-C · Aug 16
£1,498 GBP
$2,016 USD
View
Price last confirmed 81 days ago
1 more retailer has this diamond
Prices start from £767 GBP

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 Round
£767 GBP