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Oval|Lab Grown|IGI

1.28ct E SI1 Oval Lab Grown Diamond

EX • E/SI1 • IGI LG801613455

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG801613455

Diamond specifications and retailer prices

From £552 GBP
$740 USD
As of October 29, 2026
1 retailer carries this diamond
Only listing: £552 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 LG801613455 or 801613455. 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 angle35°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG801613455
Dimensions8.92 × 6.12 × 3.83 mm
L/W Ratio1.46
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.92 mm6.12 mm1.28 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG801613455
Side View
Table 59.0%Crown 35°Girdle: THN-MEDPavilion 41.2°Culet: NoneDepth 62.6%

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: £260 GBP|Low: £260 GBP|High: £455 GBP|Avg: £380 GBP|-0.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
June 14, 2026
Retailer 1£260 GBP
Retailer 2£338 GBP
Retailer 3£434 GBP
Retailer 4£455 GBP

9 data points across 4 retailers

1 retailer

B
Brilliant Earth
19907666A · Oct 29
£552 GBP
$740 USD
View

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B
1.28ct Oval
£552 GBP