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Heart|Lab Grown|IGI

1.05ct E SI2 Heart Lab Grown Diamond

EX • E/SI2 • IGI LG825687180

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG825687180

Diamond specifications and retailer prices

From £128 GBP
As of November 6, 2026
Save £313 GBP (71%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £672 GBP at MOH London · As of October 25, 2026
View at MOH London

About this 1.05ct lab-grown heart diamond

This 1.05ct 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 LG825687180 or 825687180. Listed at 15 retailers as of November 6, 2026, with a 245% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.05
Carat
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.1°
Pavilion angle43.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825687180
Dimensions6.24 × 7.17 × 4.23 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
6.24 mm7.17 mm1.05 ctE / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG825687180
Side View
Table 63.0%Crown 34.1°Girdle: MED-STKPavilion 43.1°Culet: NoneDepth 59.0%

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: £672 GBP|Low: £128 GBP|High: £714 GBP|Avg: £333 GBP|-4.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 5£128 GBP
Retailer 3£162 GBP
Retailer 2£188 GBP
Retailer 10£217 GBP
Retailer 4£244 GBP
Retailer 7£260 GBP
Retailer 6£269 GBP
Retailer 11£371 GBP
Retailer 8£391 GBP
Retailer 9£441 GBP
MOH London£672 GBP

39 data points across 11 retailers

15 retailers£128 GBP to £441 GBP

Retailer 1
-
£116 GBP
Price last confirmed 20 days ago
A
Retailer 2
-
£128 GBP
View
Final sale: no returns
Retailer 3
-
£134 GBP
View
Price last confirmed 22 days ago
Retailer 4
-
£143 GBP
View
Price last confirmed 22 days ago
A
Retailer 5
-
£162 GBP
View
A
Retailer 6
-
£188 GBP
View
B+
Retailer 7
-
£217 GBP
View
B+
Retailer 8
-
£244 GBP
View
B+
Retailer 9
-
£260 GBP
View
B+
Retailer 10
-
£269 GBP
View
B
Retailer 11
-
£371 GBP
View
B
Retailer 12
-
£391 GBP
View
B
Retailer 13
-
£441 GBP
View
Retailer 14
-
£461 GBP
View
Price last confirmed 21 days ago
Most Expensive
MOH London
LG825687180 · Oct 25
£672 GBP
View
Price last confirmed 12 days ago
14 more retailers have this diamond
Prices start from £128 GBPSave up to £313 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
1.05ct Heart
£128 GBP