The 8 most common elements in Earth's continental crust are:

1. Oxygen (O)

2. Silicon (Si)

3. Aluminum (Al)

4. Iron (Fe)

5. Calcium (Ca)

6. Sodium (Na)

7. Potassium (K)

8. Magnesium (Mg)

Therefore, any element that is not on this list is not one of the 8 most common elements in Earth's continental crust.

For example:

* Gold (Au) is not one of the 8 most common elements in Earth's continental crust.