Rocks are used all around us in many different ways. In the classroom, students use rocks everyday. Graphite, a metamorphic rock, is the part of the pencil used for writing.Slate, another metamorphic rock, was used to make blackboards in years past.Now most blackboards are constructed of man-made materials. Chalk is a soft form of limestone which is a sedimentary rock.ocks are used all around us in many different ways. In the classroom, students use rocks everyday. Graphite, a metamorphic rock, is the part of the pencil used for writing.
1 The pavers that they sell are priced anywhere from $3 to $6 per square foot. 2  According to the website PaverSearch.com, the price of pavers can range anywhere from $0.50 to as much as $15 per square foot. 3  The cost is going to greatly depend on the type of paver. Concrete pavers will cost anywhere from $5 to $12 per square feet. 2  Something such as natural stones are going to have to be customized most of the time, meaning a higher price tag. 3  Poured concrete pavers give the illusion of pavers and can cost anywhere from $3 to $7 per square meter.
Hi Sandy. The average cost of stamp concrete, prep, form and pour is also by the sq ft. In Toronto, our average is about 15 sq ft + if any steps involved. For pavers, we start at $10.00 per sq ft and up depending on the stone.I am a not a fan of pavers at all, as it is a much more costly product (only in the long run) from sinking, shifting, airborn weeds and such. good quality paver can be as much as 5.00/square foot and the cost of installation can range anywhere from 3.50-8.00 depending on what is involved such as walkway driveway, patio. Concrete is priced by the yard the cost is generally 120.00 per yard and labor costs vary depending on how good the finisher is.