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Oval|Lab Grown|IGI

1.18ct E SI1 Oval Lab Grown Diamond

ID • E/SI1 • IGI LG781624365

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG781624365

Diamond specifications and retailer prices

From £515 GBP
$690 USD
As of October 29, 2026
1 retailer carries this diamond
Only listing: £515 GBP at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

About this 1.18ct lab-grown oval diamond

This 1.18ct 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 LG781624365 or 781624365. Listed at a single retailer as of October 29, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

1.18
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.5°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG781624365
Dimensions8.48 × 5.87 × 3.69 mm
L/W Ratio1.44
Girdle conditionFaceted
Culet sizePointed
Top View
8.48 mm5.87 mm1.18 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG781624365
Side View
Table 61.0%Crown 37.5°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 62.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: £515 GBP|Low: £136 GBP|High: £552 GBP|Avg: £300 GBP|-6.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
May 1, 2026
Retailer 3£224 GBP
Retailer 5£230 GBP
Retailer 4£257 GBP
Retailer 2£365 GBP
Retailer 6£392 GBP
Brilliant Earth£515 GBP

30 data points across 6 retailers

1 retailer

B
Brilliant Earth
18051940A · Oct 29
£515 GBP
$690 USD
View

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
1.18ct Oval
£515 GBP