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Oval|Lab Grown|IGI

1.28ct E SI1 Oval Lab Grown Diamond

EX • E/SI1 • IGI LG769621920

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG769621920

Diamond specifications and retailer prices

From £590 GBP
$790 USD
As of October 29, 2026
1 retailer carries this diamond
Only listing: £590 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 1.28ct lab-grown oval diamond

This 1.28ct lab-grown oval sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG769621920 or 769621920. 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

1.28
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG769621920
Dimensions8.62 × 6.04 × 3.83 mm
L/W Ratio1.43
Girdle conditionFaceted
Culet sizePointed
Top View
8.62 mm6.04 mm1.28 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG769621920
Side View
Table 62.0%Crown 36.3°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 63.4%

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: £590 GBP|Low: £158 GBP|High: £612 GBP|Avg: £387 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
April 14, 2026
Retailer 2£159 GBP
Retailer 7£263 GBP
Retailer 4£310 GBP
Retailer 3£439 GBP
Retailer 5£449 GBP
Retailer 6£572 GBP
Brilliant Earth£590 GBP

20 data points across 7 retailers

1 retailer

B
Brilliant Earth
17484390A · Oct 29
£590 GBP
$790 USD
View

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B
1.28ct Oval
£590 GBP