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Heart|Lab Grown|IGI

1.09ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG831648646

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG831648646

Diamond specifications and retailer prices

From €151 EUR
As of November 6, 2026
Save €634 EUR (81%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €785 EUR at MOH London · As of November 4, 2026
View at MOH London

About this 1.09ct lab-grown heart diamond

This 1.09ct lab-grown heart sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG831648646 or 831648646. Listed at 16 retailers as of November 4, 2026, with prices from €151 to €785, a €634 spread on the same certified stone. MOH London lists it at €785. 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

1.09
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35.2°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831648646
Dimensions7.27 × 6.68 × 4.04 mm
L/W Ratio1.09
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.27 mm6.68 mm1.09 ctE / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG831648646
Side View
Table 64.0%Crown 35.2°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 55.6%

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: €785 EUR|Low: €151 EUR|High: €860 EUR|Avg: €407 EUR|-3.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 5€151 EUR
Retailer 2€217 EUR
Retailer 9€285 EUR
Retailer 4€288 EUR
Retailer 3€305 EUR
Retailer 7€308 EUR
Retailer 6€319 EUR
Retailer 8€439 EUR
Retailer 10€464 EUR
Retailer 11€546 EUR
MOH London€785 EUR

42 data points across 11 retailers

16 retailers€151 EUR to €785 EUR

Retailer 1
-
€137 EUR
Price last confirmed 20 days ago
A
Retailer 2
-
€151 EUR
View
Final sale: no returns
Retailer 3
-
€159 EUR
View
Price last confirmed 22 days ago
Retailer 4
-
€170 EUR
View
Price last confirmed 22 days ago
A
Retailer 5
-
€194 EUR
View
A
Retailer 6
-
€217 EUR
View
B+
Retailer 7
-
€285 EUR
View
B+
Retailer 8
-
€288 EUR
View
Retailer 9
-
€305 EUR
View
Price last confirmed 12 days ago
B+
Retailer 10
-
€308 EUR
View
B+
Retailer 11
-
€319 EUR
View
B
Retailer 12
-
€439 EUR
View
B
Retailer 13
-
€464 EUR
View
B
Retailer 14
-
€546 EUR
View
Retailer 15
-
€546 EUR
View
Price last confirmed 21 days ago
Most Expensive
B
MOH London
LG831648646 · Nov 4
€785 EUR
£690 GBP
View
15 more retailers have this diamond
Prices start from €151 EURSave up to €634 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
1.09ct Heart
€151 EUR