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Heart|Lab Grown|IGI

1.02ct E SI1 Heart Lab Grown Diamond

VG • E/SI1 • IGI LG850679578

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG850679578

Diamond specifications and retailer prices

From £217 GBP
As of November 6, 2026
Save £385 GBP (64%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £602 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 E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG850679578 or 850679578. Listed at 5 retailers as of November 2, 2026, with prices from £217 to £602, a £385 spread on the same certified stone. MOH London lists it at £602. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.02
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG850679578
Dimensions6.18 × 6.95 × 4.13 mm
L/W Ratio1.12
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.18 mm6.95 mm1.02 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG850679578
Side View
Table 58.0%Crown 34.8°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 59.4%

Caratlytics Score

How it works →
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: £602 GBP|Low: £217 GBP|High: £602 GBP|Avg: £273 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 2£217 GBP
Retailer 5£218 GBP
Retailer 3£241 GBP
Retailer 4£244 GBP
MOH London£602 GBP

8 data points across 5 retailers

5 retailers£217 GBP to £602 GBP

A
Cheapest Retailer
-
£217 GBP
B+
Retailer 2
-
£218 GBP
View
B+
Retailer 3
-
£241 GBP
View
B+
Retailer 4
-
£244 GBP
View
Most Expensive
B
MOH London
LG850679578 · Nov 2
£602 GBP
View
4 more retailers have this diamond
Prices start from £217 GBPSave up to £385 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
£217 GBP