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Heart|Lab Grown|IGI

1.05ct E IF Heart Lab Grown Diamond

EX • E/IF • IGI LG830648509

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG830648509

Diamond specifications and retailer prices

From £290 GBP
$388 USD
As of October 30, 2026
Save £573 GBP (66%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £863 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG830648509 or 830648509. Listed at 6 retailers as of October 25, 2026, with prices from £290 to £863, a £573 spread on the same certified stone. MOH London lists it at £863. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.05
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle38.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830648509
Dimensions6.68 × 6.94 × 3.97 mm
L/W Ratio1.04
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.68 mm6.94 mm1.05 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830648509
Side View
Table 53.0%Crown 34.3°Girdle: MED-STKPavilion 38.5°Culet: NoneDepth 57.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £863 GBP|Low: £290 GBP|High: £872 GBP|Avg: £520 GBP|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 31, 2026
Retailer 3£290 GBP
Retailer 2£405 GBP
Retailer 5£446 GBP
Retailer 4£456 GBP
Retailer 6£730 GBP
MOH London£863 GBP

33 data points across 6 retailers

6 retailers£290 GBP to £863 GBP

A
Cheapest Retailer
-
£290 GBP
$388 USD
A
Retailer 2
-
£405 GBP
View
B+
Retailer 3
-
£446 GBP
$597 USD
View
B+
Retailer 4
-
£456 GBP
$611 USD
View
B
Retailer 5
-
£730 GBP
$978 USD
View
Most Expensive
B
MOH London
LG830648509 · Oct 25
£863 GBP
View
5 more retailers have this diamond
Prices start from £290 GBPSave up to £573 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
£290 GBP