Diamond blade is very sharp, and not only that, it also hard as it made of fabricated diamond on teeth of the blade. And it depends on the type of blade you use. They make some shape of the teeth for special job.

One can purchase diamond blade knives at a number of places. One place is the official diamond blade knife website. Another place is on Amazon. These are two examples of places one can purchase diamond blade knives.

Well there isn't anything in this world that are diamond blade can't cut.

Diamond grits can be joined together by an adhesive to form diamond blade.

This diamond blade can be used in cutting or polishing another diamond. Diamond is the hardest mineral known and is the only mineral hard enough to cut another diamond.

Diamond blade made my a professional engineering who specialized in cutting and masonry process. They specially design the diamond blade with analysis and accurate computation to be able to fit in the jobs. They made the blade from the milling machine or advanced machining tools to mold it according to the design.