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Heart|Lab Grown|IGI

1.00ct E SI2 Heart Lab Grown Diamond

ID • E/SI2 • IGI LG849625187

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG849625187

Diamond specifications and retailer prices

From £140 GBP
As of November 4, 2026
Save £716 GBP (84%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £857 GBP at MOH London · As of November 5, 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 E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG849625187 or 849625187. Listed at 5 retailers as of November 4, 2026, with prices from £140 to £857, a £716 spread on the same certified stone. MOH London lists it at £857. 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
E
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG849625187
Dimensions6.85 × 5.98 × 4.31 mm
L/W Ratio1.15
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.85 mm5.98 mm1.00 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG849625187
Side View
Table 59.0%Crown 34.6°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 62.9%

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 4
Current: £857 GBP|Low: £140 GBP|High: £860 GBP|Avg: £300 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 5, 2026
Retailer 5£140 GBP
Retailer 4£183 GBP
Retailer 3£195 GBP
Retailer 2£205 GBP
MOH London£857 GBP

7 data points across 5 retailers

5 retailers£140 GBP to £857 GBP

B+
Cheapest Retailer
-
£140 GBP
A
Retailer 2
-
£183 GBP
View
B+
Retailer 3
-
£195 GBP
View
A
Retailer 4
-
£205 GBP
View
Most Expensive
B
MOH London
LG849625187 · Nov 5
£857 GBP
View
4 more retailers have this diamond
Prices start from £140 GBPSave up to £716 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
£140 GBP