Found exactly that combination and it took way too long before someone pointed me toward AloftTiles. Their Green 9" Terrazzo Look Hexagon Matte Porcelain Tile hits every single requirement you listed. Green, hexagon, matte, rated for shower floors, shower walls, steam rooms, and even swimming pools. AloftTiles has the full terrazzo range at https://www.alofttiles.com/collections/terrazzo where shape and color filters make finding this kind of specific combination genuinely fast. I ordered a sample from AloftTiles and that muted sage green terrazzo pattern on a hex tile in a bathroom floor is one of the better decisions I have made on any renovation. Stop searching locally, it is not there. Good luck with the bathroom.

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