I hesitate to comment on ferns as they are notoriously hard face to face. From a pic even harder!
However all the sites I checked talk about Asplenium dimorphum x difforme 'Austral Gem'as having thick, shiny dark-green pinnae./with thick and glossy dark-green foliage held on strong, feathery fronds.
I am not seeing glossy/ shiny in your pic
