How do I texture objects in an array with different textures?

Hi, I am currently learning how to use unity and I am learning how to make a puzzle piece game. I have stored all the pieces in an array and have labeled them. But now I don't know how to actually texture each piece individually. Here is my code so far:

 using UnityEngine;
 using System.Collections;
 
 public class renderTexture : MonoBehaviour 
 {
     private GameObject[] blocks = new GameObject[15];
 
     void Start()
     {
         Texture image = (Texture2D) Resources.Load("Cuzz", typeof(Texture));
 
         blocks[0] = GameObject.FindGameObjectWithTag("Cube01");
         blocks[1] = GameObject.FindGameObjectWithTag("Cube02");
         blocks[2] = GameObject.FindGameObjectWithTag("Cube03");
         blocks[3] = GameObject.FindGameObjectWithTag("Cube04");
         blocks[4] = GameObject.FindGameObjectWithTag("Cube05");
         blocks[5] = GameObject.FindGameObjectWithTag("Cube06");
         blocks[6] = GameObject.FindGameObjectWithTag("Cube07");
         blocks[7] = GameObject.FindGameObjectWithTag("Cube08");
         blocks[8] = GameObject.FindGameObjectWithTag("Cube09");
         blocks[9] = GameObject.FindGameObjectWithTag("Cube10");
         blocks[10] = GameObject.FindGameObjectWithTag("Cube11");
         blocks[11] = GameObject.FindGameObjectWithTag("Cube12");
         blocks[12] = GameObject.FindGameObjectWithTag("Cube13");
         blocks[13] = GameObject.FindGameObjectWithTag("Cube14");
         blocks[14] = GameObject.FindGameObjectWithTag("Cube15");
 
 
         blocks[0].renderer.material.mainTexture = image;
     }
 
     void Update()
     {
     }
 }

Cuzz is the name of the image I am trying to put on.