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Round|Lab Grown|IGI

1.09ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG788624676

Shape and cutting style on the report: Round brilliant

Certificate IGI LG788624676

Diamond specifications and retailer prices

From £622 GBP
$834 USD
As of October 29, 2026
Save £1,408 GBP (69%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £2,942 GBP at With Clarity · As of October 31, 2026
View at With Clarity

About this 1.09ct lab-grown round diamond

This 1.09ct lab-grown round 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 LG788624676 or 788624676. Listed at 22 retailers as of October 29, 2026, with a 226% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG788624676
Dimensions6.60 × 6.62 × 4.06 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
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
6.60 mm6.62 mm1.09 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788624676
Side View
Table 58.0%Crown 34.4°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.5%

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: £1,096 GBP|Low: £598 GBP|High: £2,739 GBP|Avg: £1,258 GBP|+0.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 11£622 GBP
Retailer 2£722 GBP
Retailer 3£722 GBP
Retailer 10£855 GBP
Retailer 1£1,096 GBP
Retailer 7£1,132 GBP
Retailer 5£1,250 GBP
Retailer 8£1,327 GBP
Retailer 4£1,660 GBP
Retailer 9£1,843 GBP
Retailer 6£2,721 GBP

37 data points across 11 retailers

22 retailers£622 GBP to £2,031 GBP

B+
Cheapest Retailer
-
£622 GBP
$834 USD
B+
Retailer 2
-
£678 GBP
$908 USD
View
B+
Retailer 3
-
£697 GBP
$934 USD
View
Final sale: no returns
Retailer 4
-
£722 GBP
$968 USD
View
Price last confirmed 14 days ago
B+
Retailer 5
-
£722 GBP
$968 USD
View
B+
Retailer 6
-
£841 GBP
HK$8,800 HKD
View
B+
Retailer 7
-
£855 GBP
$1,145 USD
View
B
Retailer 8
-
£883 GBP
$1,183 USD
View
B
Retailer 9
-
£1,034 GBP
$1,385 USD
View
B+
Retailer 10
-
£1,096 GBP
View
B
Retailer 11
-
£1,132 GBP
€1,445 EUR
View
B
Retailer 12
-
£1,250 GBP
View
B
Retailer 13
-
£1,327 GBP
ZAR 28,734 ZAR
View
B
Retailer 14
-
£1,514 GBP
$2,028 USD
View
B
Retailer 15
-
£1,660 GBP
$2,224 USD
View
B
Retailer 16
-
£1,843 GBP
$2,470 USD
View
B
Retailer 17
-
£2,022 GBP
SGD 3,661 SGD
View
B
Retailer 18
-
£2,031 GBP
$2,721 USD
View
Retailer 19
-
£2,401 GBP
$3,217 USD
View
Price under review
Retailer 20
-
£2,502 GBP
$3,352 USD
View
Price under review
Retailer 21
-
£2,721 GBP
View
Price under review
Most Expensive
With Clarity
788624676 · Oct 31
£2,942 GBP
$3,942 USD
View
Price under review
21 more retailers have this diamond
Prices start from £622 GBPSave up to £1,408 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 Round
£622 GBP