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Oval|Lab Grown|IGI

1.00ct E I1 Oval Lab Grown Diamond

ID • E/I1 • IGI LG551275781

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG551275781

Diamond specifications and retailer prices

From £150 GBP
$200 USD
As of October 28, 2026
Save £633 GBP (81%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £783 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1ct lab-grown oval diamond

This 1ct lab-grown oval sits in the classic one-carat band, graded E colour (colourless) and I1 clarity (included), with a top-tier cut grade and certified by IGI LG551275781 or 551275781. Listed at 5 retailers as of October 28, 2026, with prices from £150 to £783, a £633 spread on the same certified stone. MOH London lists it at £783. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
E
Colour
I1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG551275781
Dimensions8.05 × 5.60 × 3.54 mm
L/W Ratio1.44
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.
Top View
8.05 mm5.60 mm1.00 ctE / I1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG551275781
Side View
Table 57.0%Crown 35°Girdle: STK-THKPavilion 40.9°Culet: NoneDepth 63.2%

Caratlytics Score

How it works →
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: Oct 28
Current: £783 GBP|Low: £149 GBP|High: £783 GBP|Avg: £326 GBP|+1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 29, 2026
Retailer 3£150 GBP
Retailer 2£204 GBP
Retailer 5£240 GBP
Retailer 4£324 GBP
MOH London£783 GBP

14 data points across 5 retailers

5 retailers£150 GBP to £783 GBP

A
Cheapest Retailer
-
£150 GBP
$200 USD
B+
Retailer 2
-
£204 GBP
$272 USD
View
A
Retailer 3
-
£240 GBP
HK$2,500 HKD
View
A
Retailer 4
-
£324 GBP
$431 USD
View
Most Expensive
B+
MOH London
LG551275781 · Oct 29
£783 GBP
View
4 more retailers have this diamond
Prices start from £150 GBPSave up to £633 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
1.00ct Oval
£150 GBP