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Heart|Lab Grown|IGI

1.09ct D SI1 Heart Lab Grown Diamond

ID • D/SI1 • IGI LG694511505

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG694511505

Diamond specifications and retailer prices

From €127 EUR
$142 USD
As of October 30, 2026
Save €611 EUR (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €738 EUR at MOH London · As of November 1, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG694511505 or 694511505. Listed at 14 retailers as of October 30, 2026, with prices from €127 to €738, a €611 spread on the same certified stone. MOH London lists it at €738. 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
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle38.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG694511505
Dimensions6.68 × 7.25 × 3.95 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
6.68 mm7.25 mm1.09 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG694511505
Side View
Table 61.0%Crown 34.6°Girdle: THN-MEDPavilion 38.1°Culet: NoneDepth 54.5%

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: €738 EUR|Low: €127 EUR|High: €761 EUR|Avg: €369 EUR|-0.5%
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
Retailer 16
November 1, 2026
Retailer 6€127 EUR
Retailer 4€148 EUR
Retailer 12€158 EUR
Retailer 5€183 EUR
Retailer 2€189 EUR
Retailer 9€268 EUR
Retailer 10€277 EUR
Retailer 16€294 EUR
Retailer 3€300 EUR
Retailer 15€322 EUR
Retailer 13€380 EUR
Retailer 14€507 EUR
Retailer 11€535 EUR
MOH London€738 EUR
Retailer 7€755 EUR
Retailer 8€761 EUR

6 data points across 16 retailers

14 retailers€127 EUR to €738 EUR

A
Cheapest Retailer
-
€127 EUR
$142 USD
A
Retailer 2
-
€148 EUR
$165 USD
View
A
Retailer 3
-
€158 EUR
$176 USD
View
A
Retailer 4
-
€183 EUR
HK$1,600 HKD
View
A
Retailer 5
-
€189 EUR
£166 GBP
View
A
Retailer 6
-
€268 EUR
£236 GBP
View
B+
Retailer 7
-
€277 EUR
View
B+
Retailer 8
-
€294 EUR
$328 USD
View
B+
Retailer 9
-
€300 EUR
£264 GBP
View
B+
Retailer 10
-
€322 EUR
$360 USD
View
B+
Retailer 11
-
€380 EUR
$424 USD
View
B
Retailer 12
-
€507 EUR
$566 USD
View
B
Retailer 13
-
€535 EUR
$598 USD
View
Most Expensive
B
MOH London
LG694511505 · Nov 1
€738 EUR
£649 GBP
View
13 more retailers have this diamond
Prices start from €127 EURSave up to €611 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
€127 EUR