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Cushion|Lab Grown|IGI

0.53ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG754541233

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG754541233

Diamond specifications and retailer prices

From £137 GBP
$182 USD
As of October 30, 2026
Save £194 GBP (59%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £330 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 0.53ct lab-grown cushion diamond

This 0.53ct lab-grown cushion sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG754541233 or 754541233. Listed at 3 retailers as of October 29, 2026, with prices from £137 to £330, a £194 spread on the same certified stone. Brilliant Earth lists it at £330. 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

0.53
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle39.5°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754541233
Dimensions4.67 × 4.64 × 3.02 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
4.67 mm4.64 mm0.53 ctE / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG754541233
Side View
Table 70.0%Crown 39.5°Girdle: STK-THKPavilion 38.8°Culet: NoneDepth 65.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £330 GBP|Low: £137 GBP|High: £367 GBP|Avg: £234 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 29, 2026
Retailer 3£137 GBP
Retailer 2£183 GBP
Retailer 4£190 GBP
Retailer 5£196 GBP
Brilliant Earth£330 GBP
Retailer 6£367 GBP

9 data points across 6 retailers

3 retailers£137 GBP to £330 GBP

A
Cheapest Retailer
-
£137 GBP
$182 USD
A
Retailer 2
-
£183 GBP
€232 EUR
View
Most Expensive
B
Brilliant Earth
17604559A · Oct 29
£330 GBP
$440 USD
View
2 more retailers have this diamond
Prices start from £137 GBPSave up to £194 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
0.53ct Cushion
£137 GBP