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Cushion|Lab Grown|IGI

0.50ct E SI1 Cushion Lab Grown Diamond

VG • E/SI1 • IGI LG571304356

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG571304356

Diamond specifications and retailer prices

From £172 GBP
$231 USD
As of October 25, 2026
Save £640 GBP (79%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £812 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 0.5ct lab-grown cushion diamond

This 0.5ct lab-grown cushion sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG571304356 or 571304356. Listed at 4 retailers as of October 25, 2026, with prices from £172 to £812, a £640 spread on the same certified stone. MOH London lists it at £812. 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

0.50
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle32.6°
Pavilion angle34.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG571304356
Dimensions5.14 × 4.25 × 2.65 mm
L/W Ratio1.21
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
5.14 mm4.25 mm0.50 ctE / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG571304356
Side View
Table 66.0%Crown 32.6°Girdle: MED-STKPavilion 34.1°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 25
Current: £812 GBP|Low: £172 GBP|High: £817 GBP|Avg: £405 GBP|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 4£172 GBP
Retailer 6£196 GBP
Retailer 3£303 GBP
Retailer 2£312 GBP
Retailer 5£385 GBP
Retailer 7£694 GBP
MOH London£812 GBP

41 data points across 7 retailers

4 retailers£172 GBP to £812 GBP

A
Cheapest Retailer
-
£172 GBP
$231 USD
B
Retailer 2
-
£303 GBP
$406 USD
View
B
Retailer 3
-
£312 GBP
View
Most Expensive
B
MOH London
LG571304356 · Oct 29
£812 GBP
View
3 more retailers have this diamond
Prices start from £172 GBPSave up to £640 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
0.50ct Cushion
£172 GBP