Kitchen countertops

Marble countertops for kitchen with splashback. Two counters; one island 2700x850x900 with waterfall, second counter 2100x600x900 with 90mm gas insert and underlay double sink. Provisional measurements, will need to be measured properly to ensure this is correct. Splashback also required for second counter. Later, will need stone masonry for a laundry bench however measurements not known right now. 60mm thickness benches. Cheers.