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Round|Lab Grown|IGI

1.09ct F FL Round Lab Grown Diamond

ID • F/FL • IGI LG818668144

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818668144

Diamond specifications and retailer prices

From £339 GBP
$455 USD
As of November 1, 2026
Save £1,189 GBP (78%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £1,528 GBP at Do Amore Diamonds · As of November 1, 2026
View at Do Amore Diamonds

About this 1.09ct lab-grown round diamond

This 1.09ct lab-grown round sits in the classic one-carat band, graded F colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818668144 or 818668144. Listed at 8 retailers as of November 1, 2026, with prices from £339 to £1,528, a £1,189 spread on the same certified stone. Do Amore Diamonds lists it at £1,528. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09
Carat
F
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818668144
Dimensions6.61 × 6.55 × 4.07 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.61 mm6.55 mm1.09 ctF / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818668144
Side View
Table 58.0%Crown 34.6°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 61.8%

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: Nov 1
Current: £1,528 GBP|Low: £194 GBP|High: £1,729 GBP|Avg: £720 GBP|-11.6%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 5£194 GBP
Retailer 7£339 GBP
Retailer 11£361 GBP
Retailer 12£422 GBP
Retailer 4£495 GBP
Retailer 13£508 GBP
Retailer 8£636 GBP
Retailer 9£661 GBP
Retailer 10£756 GBP
Retailer 2£872 GBP
Retailer 6£984 GBP
Retailer 3£996 GBP
Do Amore Diamonds£1,528 GBP

16 data points across 13 retailers

8 retailers£339 GBP to £1,528 GBP

A
Cheapest Retailer
-
£339 GBP
$455 USD
Retailer 2
-
£557 GBP
$748 USD
View
Price last confirmed 24 days ago
B
Retailer 3
-
£636 GBP
$853 USD
View
B+
Retailer 4
-
£661 GBP
$887 USD
View
B
Retailer 5
-
£756 GBP
$1,015 USD
View
B
Retailer 6
-
£872 GBP
View
B
Retailer 7
-
£984 GBP
$1,320 USD
View
Most Expensive
B
Do Amore Diamonds
27-101B559CF · Nov 1
£1,528 GBP
$2,050 USD
View
7 more retailers have this diamond
Prices start from £339 GBPSave up to £1,189 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
1.09ct Round
£339 GBP