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Round|Lab Grown|IGI

3.09ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG655428249

Shape and cutting style on the report: Round brilliant

Certificate IGI LG655428249

Diamond specifications and retailer prices

From €421 EUR
As of November 4, 2026
Save €1,160 EUR (73%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: €1,581 EUR at Rare Carat · As of November 4, 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 LG655428249 or 655428249. Listed at 7 retailers as of November 4, 2026, with prices from €421 to €1,581, a €1,160 spread on the same certified stone. Rare Carat lists it at €1,581. 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 angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG655428249
Dimensions9.36 × 9.40 × 5.74 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.36 mm9.40 mm3.09 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG655428249
Side View
Table 58.0%Crown 35°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: €1,581 EUR|Low: €421 EUR|High: €3,788 EUR|Avg: €1,302 EUR|-22.9%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 5€421 EUR
Retailer 4€607 EUR
Retailer 7€609 EUR
Retailer 3€670 EUR
Retailer 6€850 EUR
Retailer 2€1,510 EUR
Rare Carat€1,581 EUR
Retailer 8€3,788 EUR

9 data points across 8 retailers

7 retailers€421 EUR to €1,581 EUR

A
Cheapest Retailer
-
€421 EUR
Retailer 2
-
€607 EUR
View
Price last confirmed 8 days ago
B+
Retailer 3
-
€609 EUR
View
A
Retailer 4
-
€670 EUR
View
A
Retailer 5
-
€850 EUR
View
B
Retailer 6
-
€1,510 EUR
View
Most Expensive
B
Rare Carat
KI2494282KF655 · Nov 4
€1,581 EUR
$1,775 USD
View
6 more retailers have this diamond
Prices start from €421 EURSave up to €1,160 EUR

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.

A
3.09ct Round
€421 EUR