CaratHunter
Plans
Heart|Lab Grown|IGI

3.09ct D SI1 Heart Lab Grown Diamond

ID • D/SI1 • IGI LG743556975

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG743556975

Diamond specifications and retailer prices

From €335 EUR
$374 USD
As of October 30, 2026
Save €1,298 EUR (79%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €1,632 EUR at MOH London · As of October 29, 2026
View at MOH London

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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG743556975 or 743556975. Listed at 13 retailers as of October 29, 2026, with prices from €335 to €1,632, a €1,298 spread on the same certified stone. MOH London lists it at €1,632. 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
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743556975
Dimensions9.15 × 10.39 × 5.66 mm
L/W Ratio1.14
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.15 mm10.39 mm3.09 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743556975
Side View
Table 60.0%Crown 34.7°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 54.5%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: €1,632 EUR|Low: €335 EUR|High: €4,780 EUR|Avg: €1,126 EUR
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 31, 2026
Retailer 5€335 EUR
Retailer 4€388 EUR
Retailer 10€415 EUR
Retailer 14€458 EUR
Retailer 11€550 EUR
Retailer 9€568 EUR
Retailer 3€661 EUR
Retailer 12€698 EUR
Retailer 2€745 EUR
Retailer 6€882 EUR
Retailer 8€1,165 EUR
Retailer 13€1,335 EUR
Retailer 15€1,398 EUR
MOH London€1,632 EUR
Retailer 7€4,780 EUR

5 data points across 15 retailers

13 retailers€335 EUR to €1,632 EUR

A
Cheapest Retailer
-
€335 EUR
$374 USD
A
Retailer 2
-
€388 EUR
$434 USD
View
A
Retailer 3
-
€415 EUR
$464 USD
View
A
Retailer 4
-
€458 EUR
HK$4,000 HKD
View
A
Retailer 5
-
€550 EUR
$615 USD
View
A
Retailer 6
-
€568 EUR
£500 GBP
View
B+
Retailer 7
-
€661 EUR
$739 USD
View
A
Retailer 8
-
€698 EUR
$780 USD
View
A
Retailer 9
-
€745 EUR
£655 GBP
View
B
Retailer 10
-
€1,165 EUR
$1,302 USD
View
B+
Retailer 11
-
€1,335 EUR
$1,492 USD
View
B
Retailer 12
-
€1,398 EUR
$1,562 USD
View
Most Expensive
B
MOH London
LG743556975 · Oct 29
€1,632 EUR
£1,436 GBP
View
12 more retailers have this diamond
Prices start from €335 EURSave up to €1,298 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
€335 EUR