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Heart|Lab Grown|IGI

1.00ct E SI2 Heart Lab Grown Diamond

ID • E/SI2 • IGI LG840612266

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG840612266

Diamond specifications and retailer prices

From €139 EUR
$155 USD
As of October 27, 2026
Save €590 EUR (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €729 EUR at MOH London · As of October 26, 2026
View at MOH London

About this 1ct lab-grown heart diamond

This 1ct lab-grown heart sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG840612266 or 840612266. Listed at 10 retailers as of October 26, 2026, with prices from €139 to €729, a €590 spread on the same certified stone. MOH London lists it at €729. 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

1.00
Carat
E
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle37.6°
Pavilion angle44°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840612266
Dimensions6.86 × 6.00 × 4.27 mm
L/W Ratio1.14
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.86 mm6.00 mm1.00 ctE / SI2
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG840612266
Side View
Table 69.0%Crown 37.6°Girdle: MED-STKPavilion 44°Culet: NoneDepth 62.2%

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 27
Current: €729 EUR|Low: €139 EUR|High: €737 EUR|Avg: €334 EUR|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 27, 2026
Retailer 9€139 EUR
Retailer 4€184 EUR
Retailer 5€209 EUR
Retailer 8€238 EUR
Retailer 2€265 EUR
Retailer 7€291 EUR
Retailer 3€334 EUR
Retailer 10€431 EUR
Retailer 6€528 EUR
MOH London€729 EUR

19 data points across 10 retailers

10 retailers€139 EUR to €729 EUR

A
Cheapest Retailer
-
€139 EUR
$155 USD
Final sale: no returns
A
Retailer 2
-
€184 EUR
HK$1,600 HKD
View
Retailer 3
-
€209 EUR
£183 GBP
View
Price last confirmed 13 days ago
B+
Retailer 4
-
€238 EUR
$265 USD
View
B+
Retailer 5
-
€265 EUR
£232 GBP
View
B+
Retailer 6
-
€291 EUR
$324 USD
View
B+
Retailer 7
-
€334 EUR
£293 GBP
View
B
Retailer 8
-
€431 EUR
SGD 648 SGD
View
B
Retailer 9
-
€528 EUR
$588 USD
View
Most Expensive
B
MOH London
LG840612266 · Oct 26
€729 EUR
£639 GBP
View
9 more retailers have this diamond
Prices start from €139 EURSave up to €590 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
1.00ct Heart
€139 EUR