Hi, To personnalise your kitchen , it's a good idea to use concrete tiles, they will bring something special into your kitchen.Take a look at Bourkshire.

Marble is a beautiful stone. You will need to have it sealed regularly (every 12-18 months and unfortunately if you're a keen cook you should be warned that it can stain and acidic things like lemon juice and vinegar need to be wiped up immediately. I say this as if you're anything like me you tend to share a lot of your cooking with your splashback. The alternative would be to look for a caesarstone type material in a marble pattern - Caesarstone and similar products don't need sealing, aren't porous and are more stain resistant. Good luck.

We have tiles that do not have a gloss finish. They are Encaustic, or at least I think that is what the style is called.

I think that it will look too busy with the contrasting cabinetwork and the patterned tile on the floor. But then Australian tastes and styles in kitchens tend to be cleaner and more understated than our American cousins. I would keep it simpler, with a plain large format tile to make cleaning easier and to visually expand the space. Your current tile is very busy and probably hides grease splatters very well. Best of luck with your considerations, Dr Retro of Dr Retro House Calls