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Cushion|Lab Grown|IGI

2.58ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • IGI LG653444056

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG653444056

Diamond specifications and retailer prices

From £351 GBP
$468 USD
As of October 28, 2026
Save £1,078 GBP (75%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £1,430 GBP at MOH London · As of October 26, 2026
View at MOH London

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 top-tier cut grade and certified by IGI LG653444056 or 653444056. Listed at 5 retailers as of October 26, 2026, with prices from £351 to £1,430, a £1,078 spread on the same certified stone. MOH London lists it at £1,430. 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

2.58
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle38.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG653444056
Dimensions9.53 × 7.24 × 4.98 mm
L/W Ratio1.32
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.53 mm7.24 mm2.58 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG653444056
Side View
Table 61.0%Crown 33°Girdle: MED-STKPavilion 38.6°Culet: NoneDepth 68.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: £1,430 GBP|Low: £251 GBP|High: £1,445 GBP|Avg: £802 GBP|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 5£351 GBP
Retailer 2£488 GBP
Retailer 4£614 GBP
Retailer 3£616 GBP
Retailer 8£654 GBP
Retailer 6£912 GBP
Retailer 7£1,302 GBP
MOH London£1,430 GBP

17 data points across 8 retailers

5 retailers£351 GBP to £1,430 GBP

A
Cheapest Retailer
-
£351 GBP
$468 USD
Final sale: no returns
A
Retailer 2
-
£488 GBP
View
B+
Retailer 3
-
£614 GBP
$817 USD
View
B+
Retailer 4
-
£616 GBP
$820 USD
View
Most Expensive
B
MOH London
LG653444056 · Oct 26
£1,430 GBP
View
4 more retailers have this diamond
Prices start from £351 GBPSave up to £1,078 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.

A
2.58ct Cushion
£351 GBP