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 $142 USD
As of October 30, 2026
Save $682 USD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $824 USD 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 $142 to $824, a $682 spread on the same certified stone. MOH London lists it at $824. 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: $824 USD|Low: $142 USD|High: $850 USD|Avg: $413 USD|-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$142 USD
Retailer 4$165 USD
Retailer 12$176 USD
Retailer 5$205 USD
Retailer 2$211 USD
Retailer 9$300 USD
Retailer 10$310 USD
Retailer 16$328 USD
Retailer 3$335 USD
Retailer 15$360 USD
Retailer 13$424 USD
Retailer 14$566 USD
Retailer 11$598 USD
MOH London$824 USD
Retailer 7$844 USD
Retailer 8$850 USD

6 data points across 16 retailers

14 retailers$142 USD to $824 USD

A
Cheapest Retailer
-
$142 USD
A
Retailer 2
-
$165 USD
View
A
Retailer 3
-
$176 USD
View
A
Retailer 4
-
$205 USD
HK$1,600 HKD
View
A
Retailer 5
-
$211 USD
£166 GBP
View
A
Retailer 6
-
$300 USD
£236 GBP
View
B+
Retailer 7
-
$310 USD
€295 EUR
View
B+
Retailer 8
-
$328 USD
View
B+
Retailer 9
-
$335 USD
£264 GBP
View
B+
Retailer 10
-
$360 USD
View
B+
Retailer 11
-
$424 USD
View
B
Retailer 12
-
$566 USD
View
B
Retailer 13
-
$598 USD
View
Most Expensive
B
MOH London
LG694511505 · Nov 1
$824 USD
£649 GBP
View
13 more retailers have this diamond
Prices start from $142 USDSave up to $682 USD

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
$142 USD