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Heart|Lab Grown|IGI

1.09ct E FL Heart Lab Grown Diamond

EX • E/FL • IGI LG818662767

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG818662767

Diamond specifications and retailer prices

From £541 GBP
$725 USD
As of October 29, 2026
Save £977 GBP (64%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £1,518 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.09ct lab-grown heart diamond

This 1.09ct lab-grown heart sits in the classic one-carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818662767 or 818662767. Listed at 6 retailers as of October 29, 2026, with prices from £541 to £1,518, a £977 spread on the same certified stone. MOH London lists it at £1,518. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09
Carat
E
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818662767
Dimensions6.53 × 7.25 × 4.13 mm
L/W Ratio1.11
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
6.53 mm7.25 mm1.09 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818662767
Side View
Table 64.0%Crown 33°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 57.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £1,518 GBP|Low: £541 GBP|High: £1,529 GBP|Avg: £876 GBP|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 5£541 GBP
Retailer 3£642 GBP
Retailer 4£645 GBP
Retailer 2£680 GBP
Retailer 6£1,346 GBP
MOH London£1,518 GBP

40 data points across 6 retailers

6 retailers£541 GBP to £1,518 GBP

B+
Cheapest Retailer
-
£541 GBP
$725 USD
B+
Retailer 2
-
£642 GBP
€819 EUR
View
B+
Retailer 3
-
£645 GBP
$864 USD
View
B+
Retailer 4
-
£680 GBP
View
B
Retailer 5
-
£1,346 GBP
$1,804 USD
View
Most Expensive
B
MOH London
LG818662767 · Oct 29
£1,518 GBP
View
5 more retailers have this diamond
Prices start from £541 GBPSave up to £977 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.

B+
1.09ct Heart
£541 GBP