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Heart|Lab Grown|IGI

1.00ct F SI1 Heart Lab Grown Diamond

ID • F/SI1 • IGI LG813619747

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG813619747

Diamond specifications and retailer prices

From £222 GBP
$298 USD
As of November 1, 2026
Save £442 GBP (67%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £664 GBP at MOH London · As of November 1, 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 LG813619747 or 813619747. Listed at 10 retailers as of November 1, 2026, with prices from £222 to £664, a £442 spread on the same certified stone. MOH London lists it at £664. 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
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG813619747
Dimensions6.97 × 6.12 × 4.08 mm
L/W Ratio1.14
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.97 mm6.12 mm1.00 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG813619747
Side View
Table 61.0%Crown 35.5°Girdle: STK-THKPavilion 41°Culet: NoneDepth 58.5%

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 1
Current: £664 GBP|Low: £234 GBP|High: £664 GBP|Avg: £392 GBP|+1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 3£248 GBP
Retailer 7£259 GBP
Retailer 8£270 GBP
Retailer 4£343 GBP
Retailer 2£377 GBP
Retailer 5£379 GBP
Retailer 6£425 GBP
Retailer 9£498 GBP
MOH London£664 GBP

42 data points across 9 retailers

10 retailers£222 GBP to £664 GBP

A
Cheapest Retailer
-
£222 GBP
$298 USD
A
Retailer 2
-
£248 GBP
View
A
Retailer 3
-
£259 GBP
$348 USD
View
A
Retailer 4
-
£270 GBP
View
B+
Retailer 5
-
£343 GBP
A$708 AUD
View
B+
Retailer 6
-
£377 GBP
$506 USD
View
B+
Retailer 7
-
£379 GBP
$508 USD
View
B+
Retailer 8
-
£425 GBP
$570 USD
View
B+
Retailer 9
-
£498 GBP
$668 USD
View
Most Expensive
B
MOH London
LG813619747 · Nov 1
£664 GBP
View
9 more retailers have this diamond
Prices start from £222 GBPSave up to £442 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
£222 GBP