Should this be mesh not microns?

https://polishedplastering.com/marmorino-range/

"There are three different types of Marmorino, there is Marmorino stucco with a 300 micron sized marble grain giving you the Marmorino look but with a shiny finish, the second is Marmorino Classico with a 500 micron sized marble grain giving you a satin shine finish, and finally there is the Marmorino Matt 600 micron size marble grain giving you a matt satin finish."



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Larger microns catch more light? Finer 600 Mesh near the range of talc should give a satin finish? Am i reading this wrong somehow?
 
https://polishedplastering.com/marmorino-range/

"There are three different types of Marmorino, there is Marmorino stucco with a 300 micron sized marble grain giving you the Marmorino look but with a shiny finish, the second is Marmorino Classico with a 500 micron sized marble grain giving you a satin shine finish, and finally there is the Marmorino Matt 600 micron size marble grain giving you a matt satin finish."


Link Removed


Larger microns catch more light? Finer 600 Mesh near the range of talc should give a satin finish? Am i reading this wrong somehow?
I don’t much about it to be honest but I read that as 300 very shiny, 600 more matt/satin
 
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