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Oval|Lab Grown|IGI

1.09ct E SI1 Oval Lab Grown Diamond

ID • E/SI1 • IGI LG497145123

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG497145123

Diamond specifications and retailer prices

From £549 GBP
$735 USD
As of October 29, 2026
Save £483 GBP (47%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,790 GBP at NZ Jewellers · As of October 31, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG497145123 or 497145123. Listed at 12 retailers as of October 29, 2026, with a 88% 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
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG497145123
Dimensions8.18 × 5.85 × 3.55 mm
L/W Ratio1.40
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
8.18 mm5.85 mm1.09 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG497145123
Side View
Table 57.0%Crown 35.9°Girdle: MED-THKPavilion 39.4°Culet: NoneDepth 60.7%

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: £1,022 GBP|Low: £403 GBP|High: £2,534 GBP|Avg: £921 GBP|+2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 3£403 GBP
Retailer 7£549 GBP
Retailer 11£614 GBP
Retailer 2£637 GBP
Retailer 9£637 GBP
Retailer 8£739 GBP
Retailer 5£769 GBP
Retailer 1£1,022 GBP
Retailer 10£1,031 GBP
Retailer 6£1,568 GBP
Retailer 4£2,514 GBP

40 data points across 11 retailers

12 retailers£549 GBP to £1,031 GBP

B+
Cheapest Retailer
-
£549 GBP
$735 USD
B
Retailer 2
-
£597 GBP
$800 USD
View
B
Retailer 3
-
£614 GBP
$823 USD
View
Final sale: no returns
Retailer 4
-
£637 GBP
$853 USD
View
Price last confirmed 19 days ago
B
Retailer 5
-
£637 GBP
$853 USD
View
B
Retailer 6
-
£739 GBP
$990 USD
View
B
Retailer 7
-
£769 GBP
$1,030 USD
View
B
Retailer 8
-
£1,022 GBP
View
B
Retailer 9
-
£1,031 GBP
$1,382 USD
View
Retailer 10
-
£1,568 GBP
$2,101 USD
View
Price under review
Most Expensive
NZ Jewellers
2dec137e-8305-427f-9579-da548110d0cb · Oct 31
£1,790 GBP
$2,399 USD
View
Price under review
10 more retailers have this diamond
Prices start from £549 GBPSave up to £483 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 Oval
£549 GBP