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Oval|Lab Grown|IGI

1.09ct F SI1 Oval Lab Grown Diamond

ID • F/SI1 • IGI LG497143900

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG497143900

Diamond specifications and retailer prices

From £441 GBP
As of November 6, 2026
Save £1,078 GBP (71%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,672 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.09ct lab-grown oval diamond

This 1.09ct lab-grown oval sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG497143900 or 497143900. Listed at 12 retailers as of November 4, 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

1.09
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG497143900
Dimensions8.54 × 5.85 × 3.49 mm
L/W Ratio1.46
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.54 mm5.85 mm1.09 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG497143900
Side View
Table 59.0%Crown 35°Girdle: THN-MEDPavilion 40.7°Culet: NoneDepth 59.7%

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 6
Current: £942 GBP|Low: £441 GBP|High: £2,538 GBP|Avg: £933 GBP|+1.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 4£441 GBP
Retailer 7£513 GBP
Retailer 10£573 GBP
Retailer 2£595 GBP
Retailer 8£595 GBP
Retailer 5£728 GBP
Retailer 1£942 GBP
Retailer 9£968 GBP
Retailer 6£1,519 GBP
Retailer 3£2,498 GBP

45 data points across 10 retailers

12 retailers£441 GBP to £1,519 GBP

A
Cheapest Retailer
-
£441 GBP
B+
Retailer 2
-
£513 GBP
View
B
Retailer 3
-
£557 GBP
View
B+
Retailer 4
-
£573 GBP
View
Final sale: no returns
B+
Retailer 5
-
£595 GBP
View
Retailer 6
-
£595 GBP
View
Price last confirmed 21 days ago
B
Retailer 7
-
£728 GBP
View
B
Retailer 8
-
£942 GBP
View
B
Retailer 9
-
£968 GBP
View
B
Retailer 10
-
£1,519 GBP
View
Most Expensive
NZ Jewellers
934ab764-8ba7-4297-9131-255ec0c6372e · Nov 5
£1,672 GBP
$2,238 USD
View
Price under review
10 more retailers have this diamond
Prices start from £441 GBPSave up to £1,078 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 Oval
£441 GBP