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Heart|Lab Grown|IGI

1.02ct G SI1 Heart Lab Grown Diamond

ID • G/SI1 • IGI LG770653157

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG770653157

Diamond specifications and retailer prices

From £220 GBP
As of November 6, 2026
Save £448 GBP (67%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £668 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.02ct lab-grown heart diamond

This 1.02ct lab-grown heart sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG770653157 or 770653157. Listed at 7 retailers as of November 2, 2026, with prices from £220 to £668, a £448 spread on the same certified stone. MOH London lists it at £668. 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

1.02
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.5°
Pavilion angle37.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770653157
Dimensions6.45 × 6.78 × 3.83 mm
L/W Ratio1.05
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.45 mm6.78 mm1.02 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG770653157
Side View
Table 67.0%Crown 34.5°Girdle: THK-VTKPavilion 37.2°Culet: NoneDepth 56.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £668 GBP|Low: £220 GBP|High: £677 GBP|Avg: £357 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 7£220 GBP
Retailer 2£247 GBP
Retailer 4£260 GBP
Retailer 3£271 GBP
Retailer 5£325 GBP
Retailer 6£501 GBP
MOH London£668 GBP

38 data points across 7 retailers

7 retailers£220 GBP to £668 GBP

A
Cheapest Retailer
-
£220 GBP
A
Retailer 2
-
£247 GBP
View
A
Retailer 3
-
£260 GBP
View
A
Retailer 4
-
£271 GBP
View
B+
Retailer 5
-
£325 GBP
View
B
Retailer 6
-
£501 GBP
View
Most Expensive
B
MOH London
LG770653157 · Nov 2
£668 GBP
View
6 more retailers have this diamond
Prices start from £220 GBPSave up to £448 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
1.02ct Heart
£220 GBP