Jumbo Slabs / BBQ Slabs / Landscaping Stone Slabs / Slabs can be simply used for outdoor kitchens, jumbo stepping stones, jumbo copings, etc. These natural stone slabs can be used for island kitchens and countertop slabs in your backyard. As the leading natural stone supplier in Canada, our large slabs, available wholesale, are stocked in a variety of colours and stones, including limestone and black granite slabs, as well as mega jumbo quartz slabs.