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Heart|Lab Grown|IGI

1.00ct F SI1 Heart Lab Grown Diamond

ID • F/SI1 • IGI LG805643885

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG805643885

Diamond specifications and retailer prices

From £123 GBP
As of November 6, 2026
Save £514 GBP (81%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £637 GBP at MOH London · As of November 4, 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG805643885 or 805643885. Listed at 17 retailers as of November 4, 2026, with prices from £123 to £637, a £514 spread on the same certified stone. MOH London lists it at £637. 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
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35.4°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG805643885
Dimensions6.86 × 6.49 × 3.96 mm
L/W Ratio1.06
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.86 mm6.49 mm1.00 ctF / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG805643885
Side View
Table 65.0%Crown 35.4°Girdle: MED-THKPavilion 39.6°Culet: NoneDepth 57.7%

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: £637 GBP|Low: £108 GBP|High: £665 GBP|Avg: £295 GBP|-3.3%
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 7£111 GBP
Retailer 11£123 GBP
Retailer 5£129 GBP
Retailer 4£138 GBP
Retailer 16£152 GBP
Retailer 8£229 GBP
Retailer 2£232 GBP
Retailer 9£233 GBP
Retailer 13£252 GBP
Retailer 12£259 GBP
Retailer 6£320 GBP
Retailer 14£376 GBP
Retailer 15£426 GBP
Retailer 3£443 GBP
Retailer 10£463 GBP
MOH London£637 GBP

42 data points across 16 retailers

17 retailers£123 GBP to £637 GBP

Retailer 1
-
£111 GBP
Price last confirmed 15 days ago
A
Retailer 2
-
£123 GBP
View
Final sale: no returns
Retailer 3
-
£129 GBP
View
Price last confirmed 14 days ago
Retailer 4
-
£138 GBP
View
Price last confirmed 13 days ago
A
Retailer 5
-
£152 GBP
View
A
Retailer 6
-
£229 GBP
View
A
Retailer 7
-
£232 GBP
View
A
Retailer 8
-
£233 GBP
View
B+
Retailer 9
-
£252 GBP
View
A
Retailer 10
-
£259 GBP
View
Retailer 11
-
£320 GBP
View
Price last confirmed 12 days ago
B+
Retailer 12
-
£353 GBP
View
B+
Retailer 13
-
£376 GBP
View
B
Retailer 14
-
£426 GBP
View
Retailer 15
-
£443 GBP
View
Price last confirmed 13 days ago
B+
Retailer 16
-
£463 GBP
View
Most Expensive
B
MOH London
LG805643885 · Nov 4
£637 GBP
View
16 more retailers have this diamond
Prices start from £123 GBPSave up to £514 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
1.00ct Heart
£123 GBP