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Oval|Lab Grown|IGI

1.13ct G SI1 Oval Lab Grown Diamond

ID • G/SI1 • IGI LG508156227

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG508156227

Diamond specifications and retailer prices

From £433 GBP
As of November 6, 2026
Save £1,063 GBP (71%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,647 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.13ct lab-grown oval diamond

This 1.13ct lab-grown oval sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG508156227 or 508156227. Listed at 11 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

1.13
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle42.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508156227
Dimensions8.45 × 5.69 × 3.71 mm
L/W Ratio1.49
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
8.45 mm5.69 mm1.13 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508156227
Side View
Table 62.0%Crown 35.1°Girdle: MED-THKPavilion 42.3°Culet: NoneDepth 65.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £2,462 GBP|Low: £433 GBP|High: £2,501 GBP|Avg: £1,031 GBP|-0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 3£433 GBP
Retailer 5£505 GBP
Retailer 6£586 GBP
Retailer 8£717 GBP
Retailer 2£928 GBP
Retailer 7£954 GBP
Retailer 4£1,496 GBP
Retailer 1£2,462 GBP

43 data points across 8 retailers

11 retailers£433 GBP to £1,496 GBP

A
Cheapest Retailer
-
£433 GBP
B+
Retailer 2
-
£505 GBP
View
B
Retailer 3
-
£550 GBP
View
Retailer 4
-
£586 GBP
View
Price last confirmed 21 days ago
B+
Retailer 5
-
£586 GBP
View
B
Retailer 6
-
£717 GBP
View
B
Retailer 7
-
£928 GBP
View
B
Retailer 8
-
£954 GBP
View
B
Retailer 9
-
£1,496 GBP
View
Most Expensive
NZ Jewellers
095eaf92-229d-453b-bc88-4ba72cdee0a6 · Nov 5
£1,647 GBP
$2,205 USD
View
Price under review
9 more retailers have this diamond
Prices start from £433 GBPSave up to £1,063 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
1.13ct Oval
£433 GBP