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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 £106 GBP
As of November 6, 2026
Save £510 GBP (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £616 GBP at MOH London · As of November 2, 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 November 2, 2026, with prices from £106 to £616, a £510 spread on the same certified stone. MOH London lists it at £616. 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
Colour
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: Nov 6
Current: £616 GBP|Low: £106 GBP|High: £635 GBP|Avg: £309 GBP|-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 6, 2026
Retailer 6£106 GBP
Retailer 4£123 GBP
Retailer 12£131 GBP
Retailer 5£152 GBP
Retailer 9£156 GBP
Retailer 10£223 GBP
Retailer 2£234 GBP
Retailer 16£245 GBP
Retailer 3£250 GBP
Retailer 15£269 GBP
Retailer 13£317 GBP
Retailer 14£423 GBP
Retailer 11£447 GBP
MOH London£616 GBP
Retailer 7£630 GBP
Retailer 8£635 GBP

11 data points across 16 retailers

14 retailers£106 GBP to £616 GBP

A
Cheapest Retailer
-
£106 GBP
A
Retailer 2
-
£123 GBP
View
A
Retailer 3
-
£131 GBP
View
A
Retailer 4
-
£152 GBP
View
A
Retailer 5
-
£156 GBP
View
A
Retailer 6
-
£223 GBP
View
B+
Retailer 7
-
£234 GBP
View
B+
Retailer 8
-
£245 GBP
View
B+
Retailer 9
-
£250 GBP
View
B+
Retailer 10
-
£269 GBP
View
B+
Retailer 11
-
£317 GBP
View
B
Retailer 12
-
£423 GBP
View
B
Retailer 13
-
£447 GBP
View
Most Expensive
B
MOH London
LG694511505 · Nov 2
£616 GBP
View
13 more retailers have this diamond
Prices start from £106 GBPSave up to £510 GBP

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
£106 GBP