You can create a new material in two ways: modifying an existing material, or creating a new one from scratch.

Modifying an Existing Material

In this example, the cylinder has the material "Stones - Granite Sierra" and the plate below is "Metals - Antique Brass."

1. To create a new material from an existing material, find the existing material in the Material Editor.
   
2. Then right click and select Copy Material Here.
   
3. Assign a name for the new material. It will be placed in the same category as the original.
   
4. In the Pattern category, increase the Scale (which is the size of the repeated image, in drawing units), and change the various mineral colors.