Carbide steel or diamond tips.

Professional diamond cutters use a mallet and diamond-tipped, hardened steel chisel to cleave a diamond along its natural plane, or use a diamond-tipped saw to remove unwanted material from a rough stone.

In either case, it's not the metal that cuts the diamond, it's the diamond tips: only a diamond can 'cut' a diamond.

Read more about cutting diamonds, below.

The tools used in biotechnology require microscopic precision -- a precision that can be enhanced by the use of diamond tips on the tools.

There are all different types, carbite tips to diamonds

A hand hacksaw with diamond tips will be great for cutting trim, and can also be used for pipe on other projects.