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Heart|Lab Grown|IGI

3.09ct D SI2 Heart Lab Grown Diamond

ID • D/SI2 • IGI LG685540444

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG685540444

Diamond specifications and retailer prices

From €341 EUR
As of November 6, 2026
Save €2,570 EUR (88%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €2,911 EUR at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 3.09ct lab-grown heart diamond

This 3.09ct lab-grown heart sits in the three to five carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG685540444 or 685540444. Listed at 13 retailers as of November 6, 2026, with prices from €341 to €2,911, a €2,570 spread on the same certified stone. Brilliant Earth lists it at €2,911. 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
D
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685540444
Dimensions9.89 × 8.87 × 5.99 mm
L/W Ratio1.11
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.89 mm8.87 mm3.09 ctD / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685540444
Side View
Table 59.0%Crown 37.6°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 60.6%

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 6
Current: €2,911 EUR|Low: €341 EUR|High: €3,421 EUR|Avg: €999 EUR|-14.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 10€341 EUR
Retailer 7€382 EUR
Retailer 13€423 EUR
Retailer 5€445 EUR
Retailer 11€564 EUR
Retailer 2€757 EUR
Retailer 9€766 EUR
Retailer 6€1,019 EUR
Retailer 4€1,064 EUR
Retailer 12€1,229 EUR
Retailer 3€1,359 EUR
Retailer 8€1,652 EUR
Brilliant Earth€2,911 EUR

45 data points across 13 retailers

13 retailers€341 EUR to €2,911 EUR

A
Cheapest Retailer
-
€341 EUR
A
Retailer 2
-
€382 EUR
View
A
Retailer 3
-
€423 EUR
View
Retailer 4
-
€445 EUR
View
Price last confirmed 12 days ago
B+
Retailer 5
-
€564 EUR
View
A
Retailer 6
-
€757 EUR
View
A
Retailer 7
-
€766 EUR
View
B+
Retailer 8
-
€1,019 EUR
View
B+
Retailer 9
-
€1,064 EUR
View
B+
Retailer 10
-
€1,229 EUR
View
B+
Retailer 11
-
€1,359 EUR
View
B
Retailer 12
-
€1,652 EUR
View
Most Expensive
B
Brilliant Earth
13281496A · Nov 6
€2,911 EUR
$3,250 USD
View
12 more retailers have this diamond
Prices start from €341 EURSave up to €2,570 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 Heart
€341 EUR