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
$381 USD
As of October 30, 2026
Save €2,568 EUR (88%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €2,909 EUR at Brilliant Earth · As of October 30, 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 14 retailers as of October 30, 2026, with prices from €341 to €2,909, a €2,568 spread on the same certified stone. Brilliant Earth lists it at €2,909. 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
Color
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

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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: Oct 30
Current: €2,909 EUR|Low: €341 EUR|High: €3,419 EUR|Avg: €1,014 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
October 31, 2026
Retailer 8€341 EUR
Retailer 4€402 EUR
Retailer 11€422 EUR
Retailer 5€445 EUR
Retailer 9€564 EUR
Retailer 2€764 EUR
Retailer 7€765 EUR
Retailer 6€1,054 EUR
Retailer 3€1,064 EUR
Retailer 10€1,228 EUR
Retailer 12€1,358 EUR
Retailer 13€1,742 EUR
Brilliant Earth€2,909 EUR

43 data points across 13 retailers

14 retailers€341 EUR to €2,909 EUR

A
Cheapest Retailer
-
€341 EUR
$381 USD
A
Retailer 2
-
€402 EUR
$449 USD
View
A
Retailer 3
-
€422 EUR
$472 USD
View
A
Retailer 4
-
€445 EUR
$497 USD
View
B+
Retailer 5
-
€564 EUR
$630 USD
View
A
Retailer 6
-
€764 EUR
£673 GBP
View
A
Retailer 7
-
€765 EUR
$855 USD
View
Retailer 8
-
€979 EUR
$1,094 USD
View
Price last confirmed 22 days ago
B+
Retailer 9
-
€1,054 EUR
$1,177 USD
View
B+
Retailer 10
-
€1,064 EUR
A$1,828 AUD
View
B+
Retailer 11
-
€1,228 EUR
$1,372 USD
View
B+
Retailer 12
-
€1,358 EUR
$1,517 USD
View
B
Retailer 13
-
€1,742 EUR
£1,532 GBP
View
Most Expensive
B
Brilliant Earth
13281496A · Oct 30
€2,909 EUR
$3,250 USD
View
13 more retailers have this diamond
Prices start from €341 EURSave up to €2,568 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