Serious time now [
]
Covering marble would be a "crying shame" as my gran would say (if she wasn't dead) - in the heady days of industrial coatings, a matt or low level texturing coating/treatment could be applied, thus allowing the beauty of the floor to gleam though.
For 'domestic use' try Rocol [
www.rocol.com ] and look at site safety systems.
Just remember, when checking in at the airport, when they point at the leaflet and ask "are you carrying any of these?", that is your cue to say "no".