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Heart|Lab Grown|IGI

1.00ct F SI1 Heart Lab Grown Diamond

EX • F/SI1 • IGI LG671472968

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG671472968

Diamond specifications and retailer prices

From £420 GBP
As of November 2, 2026
1 retailer carries this diamond
Only listing: £420 GBP at Diamond Quarter
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Diamond Quarter

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 LG671472968 or 671472968. Listed at a single retailer as of November 2, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG671472968
Dimensions6.09 × 7.08 × 4.13 mm
L/W Ratio1.16
Girdle conditionFaceted
Top View
6.09 mm7.08 mm1.00 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG671472968
Side View
Table 58.0%Crown 33.7°Girdle: STK-THKPavilion 39°CuletDepth 58.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 2
Current: £420 GBP|Low: £420 GBP|High: £420 GBP|Avg: £420 GBP
September 26, 2026
Diamond Quarter£420 GBP

1 data point across 1 retailer

1 retailer

B
Diamond Quarter
1.0SI1FLG685D3BN · Nov 2
£420 GBP
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B
1.00ct Heart
£420 GBP