Purbeck stone plates have the same strength and durability as their ceramic equivalent. They will withstand normal wear and tear. However some stones are slightly porous so oily deposits should be wiped off as should fruit juice which can attack the polish.
The “snail trails” or thin veins across the surface of some plates are age old fissures which have re-welded themselves together in the passage of time. They are a natural and inescapable characteristic of the material and will cause no trouble.
The polished surface needs only an occasional cleaning with warm water but may be enhanced over the years by wax polishing if so desired.