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Cushion|Lab Grown|IGI

2.58ct E SI1 Cushion Lab Grown Diamond

GD • E/SI1 • IGI LG7518174829

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG7518174829

Diamond specifications and retailer prices

From £2,223 GBP
$2,960 USD
As of October 29, 2026
1 retailer carries this diamond
Only listing: £2,223 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 2.58ct lab-grown cushion diamond

This 2.58ct lab-grown cushion sits in the two to three carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG7518174829 or 7518174829. 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. 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

2.58
Carat
E
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG7518174829
Dimensions9.24 × 7.38 × 5.06 mm
L/W Ratio1.25
Culet sizeNone
Key to symbols
Growth Remnant, Feather
Top View
9.24 mm7.38 mm2.58 ctE / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG7518174829
Side View
Table 62.0%CrownGirdle: THN-MEDPavilionCulet: NoneDepth 68.6%

Caratlytics Score

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C
Average
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Price History

Last verified: Oct 29
Current: £2,223 GBP|Low: £2,140 GBP|High: £3,116 GBP|Avg: £2,659 GBP|-19.8%
October 4, 2026
Brilliant Earth£2,223 GBP

14 data points across 1 retailer

1 retailer

C
Brilliant Earth
14885304Y · Oct 29
£2,223 GBP
$2,960 USD
View

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C
2.58ct Cushion
£2,223 GBP