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Oval|Lab Grown|IGI

4.53ct H SI1 Oval Lab Grown Diamond

EX • H/SI1 • IGI LG559270991

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG559270991

Diamond specifications and retailer prices

From £730 GBP
As of November 6, 2026
Save £1,525 GBP (68%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £2,255 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 4.53ct lab-grown oval diamond

This 4.53ct lab-grown oval sits in the three to five carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG559270991 or 559270991. Listed at 5 retailers as of November 1, 2026, with prices from £730 to £2,255, a £1,525 spread on the same certified stone. MOH London lists it at £2,255. 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

4.53
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG559270991
Dimensions13.23 × 9.49 × 5.86 mm
L/W Ratio1.39
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
13.23 mm9.49 mm4.53 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG559270991
Side View
Table 60.0%Crown 34.6°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 61.7%

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: £2,255 GBP|Low: £423 GBP|High: £2,343 GBP|Avg: £1,267 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 8£423 GBP
Retailer 3£471 GBP
Retailer 2£730 GBP
Retailer 4£782 GBP
Retailer 6£1,366 GBP
Retailer 5£1,556 GBP
MOH London£2,255 GBP
Retailer 7£2,343 GBP

12 data points across 8 retailers

5 retailers£730 GBP to £2,255 GBP

Retailer 1
-
£471 GBP
Price last confirmed 21 days ago
B+
Retailer 2
-
£730 GBP
View
A
Retailer 3
-
£782 GBP
View
B+
Retailer 4
-
£1,556 GBP
View
Most Expensive
B+
MOH London
LG559270991 · Nov 1
£2,255 GBP
View
4 more retailers have this diamond
Prices start from £730 GBPSave up to £1,525 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
4.53ct Oval
£730 GBP