Diamond is the hardest natural mineral. Seventy-five percent of diamonds mined are used by industry to maximize the cutting ability of tools and bits.
Those types of blades and bits are mainly for cutting tiles and stone.
A hollow diamond drill bit, with lots of water, cutting slowly, will do the job. Ideally in a drill press of some kind instead of freehand. Diamond bits in rotary tools like Foredom or Dremel may do it, if it's suitable to use them with lots of water.
The basic categories of cutting tools are linear and rotary machines. Linear cutting tools include tool bits and broaches. Rotary cutting tools include drill bits, countersinks and counterbores, taps and dies, milling cutters, reamers, and cold saw blades.
The only tool that uses drill bits is a drill. There are, however, many different types of drill bits. The drill bits vary by material, size, shape, and function.
Diamond jewelery makes up about 25% of the use for diamonds, the remainder is used for industrial manufacture, including drill bits, and other tools.
Diamond tipped drill bits
Most diamonds mined across the world -- 75% -- end up being used in industry, on the blades of cutting tools like saw blades and drill bits. I think it's wrong to automatically assume diamonds = jewelry.
Diamond Core Drill Bits are the best for concrete.
Boron
These are to drill in glass
boron
A good location to buy Core Drill Bits online is the Diamond Tool Store Website. Core Drill Bits can also be found for sale on the official Amazon website.