Most of the enzymes used as molecular scissors are known as restriction enzymes. what is the reason for this name?

Because when you put a part of the DNA and take it out, you can restrict an ability of that cell. When you cut out a piece of DNA from a pancreas beta cell that codes for insulin synthesis, you restrict the cells ability to make insulin, hence the name "restriction enzyme". I hope this is the answer that you are looking for and it comes to your help.

The best way to tell its true color is to look at the minerals streak