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Oval|Lab Grown|IGI

1.00ct E SI2 Oval Lab Grown Diamond

E/SI2 • IGI LG651420509

Certificate IGI LG651420509

Diamond specifications and retailer prices

From £511 GBP
$680 USD
As of October 28, 2026
Save £285 GBP (36%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £796 GBP at Jared · As of October 30, 2026
View at Jared

About this 1ct lab-grown oval diamond

This 1ct lab-grown oval sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included) and certified by IGI LG651420509 or 651420509. Listed at 3 retailers as of October 28, 2026, with prices from £511 to £796, a £285 spread on the same certified stone. Jared lists it at £796. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
E
Colour
SI2
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG651420509
Dimensions8.00 × 5.69 mm
L/W Ratio1.41
Top View
8.00 mm5.69 mm1.00 ctE / SI2
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG651420509
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 61.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: £796 GBP|Low: £511 GBP|High: £796 GBP|Avg: £641 GBP|+1.0%
Jared
Retailer 2
Retailer 3
September 28, 2026
Retailer 2£511 GBP
Retailer 3£511 GBP
Jared£796 GBP

9 data points across 3 retailers

3 retailers£511 GBP to £796 GBP

B
Cheapest Retailer
-
£511 GBP
$680 USD
B
Retailer 2
-
£511 GBP
$680 USD
View
Most Expensive
C
Jared
152410751 · Oct 30
£796 GBP
$1,060 USD
View
2 more retailers have this diamond
Prices start from £511 GBPSave up to £285 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
1.00ct Oval
£511 GBP